diff --git a/data/json/mapgen/microlab/microlab_firebreak.json b/data/json/mapgen/microlab/microlab_firebreak.json
new file mode 100644
index 0000000000000..a9d2b5c74c7bf
--- /dev/null
+++ b/data/json/mapgen/microlab/microlab_firebreak.json
@@ -0,0 +1,186 @@
+[
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_firebreak" ] ],
+    "method": "json",
+    "weight": 500,
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "||||||            ||||||",
+        "|####|            |####|",
+        "|####|            |####|",
+        "|####|            |####|",
+        "|####|            |####|",
+        "|#||||            ||||#|",
+        "|#|XX=            =XX|#|",
+        "|#|XX=            =XX|#|",
+        "|#|XX=dddd    dddd=XX|#|",
+        "|#||||  hd    dh  ||||#|",
+        "|####|            |####|",
+        "|####|---6-55-----|####|",
+        "|#######---  -#########|",
+        "|#########-  -#########|",
+        "|#########-  -#########|",
+        "|#########-  ---#######|",
+        "|####|-----55-6---|####|",
+        "|#|||| h        h ||||#|",
+        "|#|XX=ddd     dddd=XX|#|",
+        "|#|XX=            =XX|#|",
+        "|#|XX=            =XX|#|",
+        "|#||||            ||||#|",
+        "|####| PP  PP  PP |####|",
+        "|||||| PP  PP  PP ||||||"
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" },
+      "computers": {
+        "6": {
+          "name": "Security Terminal",
+          "security": 5,
+          "options": [ { "name": "UNLOCK SECURITY DOORS", "action": "unlock" } ],
+          "failures": [ { "action": "shutdown" }, { "action": "alarm" } ]
+        }
+      }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_firebreak" ] ],
+    "method": "json",
+    "weight": 500,
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "||||||            ||||||",
+        "|####|            |####|",
+        "|####|            |####|",
+        "|####|ddd      ddd|####|",
+        "|####| hd      d  |####|",
+        "|#||||  d PPPP d h|####|",
+        "|#|XX=    PPPP    |####|",
+        "|#|XX=    PPPP    |####|",
+        "|#|XX=dddd    dddd|####|",
+        "|#||||  hd    dh  |####|",
+        "|####|            |####|",
+        "|####|---6-55-----|####|",
+        "|#######---  -#########|",
+        "|#########-  -#########|",
+        "|#########-  -#########|",
+        "|#########-  ---#######|",
+        "|####|-----55-6---|####|",
+        "|####|XXX=      h |####|",
+        "|####|==== YY dddd|####|",
+        "|####|            |####|",
+        "|####|            |####|",
+        "|####|            |####|",
+        "|####| PP  PP  PP |####|",
+        "|||||| PP  PP  PP ||||||"
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" },
+      "computers": {
+        "6": {
+          "name": "Security Terminal",
+          "security": 5,
+          "options": [ { "name": "UNLOCK SECURITY DOORS", "action": "unlock" } ],
+          "failures": [ { "action": "shutdown" }, { "action": "alarm" } ]
+        }
+      }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_firebreak" ] ],
+    "method": "json",
+    "weight": 75,
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "||||||            ||||||",
+        "|####|            |####|",
+        "|####|            |####|",
+        "|####|            |####|",
+        "|####|            |####|",
+        "|#||||    M       ||||#|",
+        "|#|XX=      ü     =XX|#|",
+        "|#|XX=            =XX|#|",
+        "|#|XX=dddd    dddd=XX|#|",
+        "|#||||  hd  M dh  ||||#|",
+        "|####|            |####|",
+        "|####|---6-55-----|####|",
+        "|#######---  -#########|",
+        "|#########-  -#########|",
+        "|#########-  -#########|",
+        "|#########-  ---#######|",
+        "|####|-----55-6---|####|",
+        "|#|||| h        h ||||#|",
+        "|#|XX=ddd     dddd=XX|#|",
+        "|#|XX=            =XX|#|",
+        "|#|XX=            =XX|#|",
+        "|#||||            ||||#|",
+        "|####| PP  PP  PP |####|",
+        "|||||| PP  PP  PP ||||||"
+      ],
+      "set": [ { "point": "bash", "x": [ 6, 18 ], "y": [ 6, 18 ], "repeat": [ 30, 100 ] } ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" },
+      "monster": { "M": { "monster": "mon_mutant_experimental" }, "ü": { "monster": "mon_mutant_evolved" } },
+      "computers": {
+        "6": {
+          "name": "Security Terminal",
+          "security": 5,
+          "options": [ { "name": "UNLOCK SECURITY DOORS", "action": "unlock" } ],
+          "failures": [ { "action": "shutdown" }, { "action": "alarm" } ]
+        }
+      }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_firebreak" ] ],
+    "method": "json",
+    "weight": 75,
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "||||||            ||||||",
+        "|####|            |####|",
+        "|####|            |####|",
+        "|####|           ü|####|",
+        "|####|            |####|",
+        "|#||||            ||||#|",
+        "|#|XX=            =XX|#|",
+        "|#|XX=            =XX|#|",
+        "|#|XX=dddd    dddd=XX|#|",
+        "|#||||  hd    dh  ||||#|",
+        "|####|ü           |####|",
+        "|####|---6-55-----|####|",
+        "|#######---M -#########|",
+        "|#########- M-#########|",
+        "|#########-  -#########|",
+        "|#########-  ---#######|",
+        "|####|-----55-6---|####|",
+        "|#|||| h        h ||||#|",
+        "|#|XX=ddd     dddd=XX|#|",
+        "|#|XXü            =XX|#|",
+        "|#|XX=            =üX|#|",
+        "|#||||            ||||#|",
+        "|####| PP  PP  PP |####|",
+        "|||||| PP  PP  PP ||||||"
+      ],
+      "set": [ { "point": "bash", "x": [ 6, 18 ], "y": [ 6, 18 ], "repeat": [ 30, 100 ] } ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" },
+      "monster": { "M": { "monster": "mon_hunting_horror" }, "ü": { "monster": "mon_breather_hub" } },
+      "computers": {
+        "6": {
+          "name": "Security Terminal",
+          "security": 5,
+          "options": [ { "name": "UNLOCK SECURITY DOORS", "action": "unlock" } ],
+          "failures": [ { "action": "shutdown" }, { "action": "alarm" } ]
+        }
+      }
+    }
+  }
+]
diff --git a/data/json/mapgen/microlab/microlab_hallway.json b/data/json/mapgen/microlab/microlab_hallway.json
new file mode 100644
index 0000000000000..198528f756d77
--- /dev/null
+++ b/data/json/mapgen/microlab/microlab_hallway.json
@@ -0,0 +1,182 @@
+[
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_hallway" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        " cc  | PP  PP  PP |     ",
+        " cc  | PP  PP  PP |     ",
+        "     | PPbb  bbPP |cci  ",
+        "  |||| PP      PP ||||  ",
+        " F|XX= PPbb  bbPP =XX|  ",
+        "|||XX= PP      PP =XX|||",
+        " F|XX= PP dd6d PP =XX|c ",
+        " F|XX= PP dh d PP =XX|c ",
+        " F|XX= PP d hd PP =XX|c ",
+        "  |XX= PP d6dd PP =XX|c ",
+        "|5|||| PP      PP ||||||",
+        "   2  YPP      PPY 2    ",
+        "   2  YPP      PPY 2    ",
+        "|2|||| PP      PP ||2|||",
+        "   hc| PP |||| PP |c    ",
+        "cc  c| PP  YY  PP |6    ",
+        "cc  6| PP  ^???PP |c c  ",
+        "     | PP   t ?PP |ciccc",
+        "|2|||| PP? t   PP ||||||",
+        "  ch | PP???^  PP |     ",
+        "  cc | PP      PP |F c  ",
+        "  ch | PP  PP  PP |F c  ",
+        "  cc | PP  PP  PP |F c  ",
+        "     | PP  PP  PP |     "
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_hallway" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        " cc  | PP  PP  PP |     ",
+        " cc  | PP      PP |     ",
+        "     | PP b  b PP |cci  ",
+        "  |||| PP b  b PP ||||  ",
+        " F|XX= PP      PP =XX|  ",
+        "|||XX= PP ==== PP =XX|||",
+        " F|XX= PP =XX= PP =XX|c ",
+        " F|XX= PP =XX= PP =XX|c ",
+        " F|XX= PP =XX= PP =XX|c ",
+        "  |XX= PP =XX= PP =XX|c ",
+        "|5||||=[[======[[=||||||",
+        "    2YPPPPPPPPPPPPY2    ",
+        "    2YPPPPPPPPPPPPY2    ",
+        "|2||||=[[======[[=||||||",
+        "  |XX= PP =XX= PP =XX|  ",
+        "c |XX= PP =XX= PP =XX|  ",
+        "c |XX= PP =XX= PP =XX|  ",
+        "  |XX= PP =XX= PP =XX|cc",
+        "|2|XX= PP =XX= PP =XX|||",
+        "  |XX= PP =XX= PP =XX|c ",
+        "  |||| PP =XX= PP ||||c ",
+        "  icc| PP ==== PP |F cc ",
+        "    F| PP      PP |F c  ",
+        "    F| PP  PP  PP |     "
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_hallway" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        " cc  | PP  PP  PP |     ",
+        " cc  | PP      PP |     ",
+        "     | PP ==== PP |cci  ",
+        "  |||| PP =XX= PP ||||  ",
+        " F|XX= PP =XX= PP =XX|  ",
+        "|||XX==[[==XX==[[==XX|||",
+        " F|XX= PP =XX= PP =XX|c ",
+        " F|XX= PP =XX= PP =XX|c ",
+        " F|XX= PP =XX= PP =XX|c ",
+        "  |XX= PP =XX= PP =XX|c ",
+        "|5|XX= PP =XX= PP =XX|||",
+        "  |XX= PP =XX= PP =XX|  ",
+        "  |XX= PP =XX= PP =XX|  ",
+        "|2|XX= PP =XX= PP =XX|2|",
+        "  |XX= PP =XX= PP =XX|  ",
+        "c |XX= PP =XX= PP =XX|  ",
+        "c |XX= PP =XX= PP =XX|  ",
+        "  |XX= PP =XX= PP =XX|cc",
+        "|2|XX= PP =XX= PP =XX|||",
+        "  |XX=YPP =XX= PPY=XX|c ",
+        "  |||| PP =XX= PP ||||c ",
+        "  icc| PP ==== PP |F cc ",
+        "    F| PP      PP |F c  ",
+        "    F| PP  PP  PP |     "
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_hallway" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        " cc c| PP  PP  PP |c c  ",
+        " cc c| PP  PP  PP |c    ",
+        "    c| PP  PP  PP |cci  ",
+        "  |||| PP  PP  PP ||||F ",
+        " F|XX= PP  PP  PP =XX|F ",
+        "|||XX= PP  PP  PP =XX|||",
+        " F|XX= PP  PP  PP =XX|c ",
+        " F|XX= PP  PP  PP =XX|c ",
+        " F|XX= PP      PP =XX|i ",
+        "  |XX=            =XX|c ",
+        "|5||||            ||||||",
+        "   2  Y          Y 2    ",
+        "   2  Y          Y 2    ",
+        "|2||||            ||2|||",
+        "   hc|            |c    ",
+        "cc  c| PP      PP |6    ",
+        "cc  6| PP  PP  PP |c c  ",
+        "     | PP  PP  PP |ciccc",
+        "|2|||| PP  PP  PP ||||||",
+        "  ch | PP  PP  PP |     ",
+        "  cc | PP  PP  PP |F i  ",
+        "  ch | PP  PP  PP |F c  ",
+        "  cc | PP  PP  PP |F i  ",
+        "     | PP  PP  PP |     "
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_hallway" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        " cc c| PP  PP  PP |c c  ",
+        " cc c| PP  PP  PP |c    ",
+        "    c| PP  PP  PP |cci  ",
+        "  |||| PP  PP  PP ||||F ",
+        " F|XX= PP  PP  PP =XX|F ",
+        "|||XX= PP  PP  PP =XX|||",
+        " F|=== PP  PP  PP ===|c ",
+        " F|?   PP  PP  PP   ?|c ",
+        " F|?Y  PP  PP  PP  Y?|i ",
+        "  |???            ???|c ",
+        "|5||||            ||||||",
+        "   2               2    ",
+        "   2               2    ",
+        "|2||||            ||2|||",
+        "   hc|b  bb  bb  b|c    ",
+        "cc  c|b  bb  bb  b|6    ",
+        "cc  6|b  bb  bb  b|c c  ",
+        "     |            |ciccc",
+        "|2|||| PP  PP  PP ||||||",
+        "  ch | PP  PP  PP |     ",
+        "  cc | PP  PP  PP |F i  ",
+        "  ch | PP  PP  PP |F c  ",
+        "  cc | PP  PP  PP |F i  ",
+        "     | PP  PP  PP |     "
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  }
+]
diff --git a/data/json/mapgen/microlab/microlab_hallway_start.json b/data/json/mapgen/microlab/microlab_hallway_start.json
new file mode 100644
index 0000000000000..c7fc354ba001c
--- /dev/null
+++ b/data/json/mapgen/microlab/microlab_hallway_start.json
@@ -0,0 +1,146 @@
+[
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_hallway_start" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        " cc  | PP  YY  PP |     ",
+        " cc  | PP  YY  PP |     ",
+        "     | PP |||| PP |r i  ",
+        "     | PP |##| PP |r c  ",
+        " FFF | PP |||| PP |r c  ",
+        "||||2| PP =XX= PP ||||||",
+        " F|F | PP =XX= PP |???| ",
+        " F|F | PP =XX= PP  Y t| ",
+        " F|F | PP =XX= PP  Y t| ",
+        "  |  | PP =XX= PP |^??| ",
+        "|5|||| PP |||| PP ||||||",
+        "    2  PP |##| PP       ",
+        "    2  PP |##| PP       ",
+        "|2|||| PP |||| PP ||2((|",
+        "   hc| PP      PP |c    ",
+        "cc  c| PP      PP |c c  ",
+        "cc  6| PP      PP |c c  ",
+        "     |^    YY     |c    ",
+        "|2||||(((((22(((((||2|||",
+        "     |^       ???^|     ",
+        "   c6|B d  YY     |c c  ",
+        "   cc|Bhd     ???^|c c  ",
+        "   cc||||||  ||||||c c  ",
+        "     |FFFF|  |FFFF|     "
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_hallway_start" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "  c h| PP  PP  PP |c    ",
+        " cccc| PP  PP  PP |c6h  ",
+        " 6|||| PP |||| PP ||||F ",
+        " F|XX= PPY|##|YPP =XX|F ",
+        " F|XX= PP |||| PP =XX|F ",
+        "|||XX= PP d^ d PP =XX||2",
+        " F|XX= PP d hd PP =XX|F ",
+        " F|XX= PP dddd PP =XX|F ",
+        " F|XX= PP  PP  PP =XX|F ",
+        "  |XX= PPY PP YPP =XX|F ",
+        "|||||| PP  PP  PP |||||2",
+        "     | PP  PP  PP |^    ",
+        "     | PP  PP  PP |^    ",
+        "|||  | PP  PP  PP ||2((|",
+        "  =  | PP  PP  PP |c    ",
+        "  [  | PP  PP  PP |c c  ",
+        "  =  | PP  PP  PP |c c  ",
+        "cc=  |   Y    Y   |c    ",
+        "|||  |^??^    ^??^||||||",
+        " c|  ||||||  ||||||FFFFF",
+        " c|  2            2  c  ",
+        " c|  2            2  c  ",
+        " c|||||||||  ||||||c c  ",
+        "     |FFFF|  |FFFF|     "
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_hallway_start" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "  c h| PP  PP  PP |c    ",
+        " cccc| PP  PP  PP |c6h  ",
+        " 6|||| PP |||| PP ||||F ",
+        " F|XX= PP   h  PP =XX|F ",
+        " F|XX= PP |dd| PP =XX|F ",
+        "|||XX= PPPPPPPPPP =XX||2",
+        " F|XX= PPPPPPPPPP =XX|F ",
+        " F|XX======[[======XX|F ",
+        " F|XXXXXX=YPPY=XXXXXX|F ",
+        "  |XXXXXX=YPPY=XXXXXX|F ",
+        "|||||||====[[====||||||2",
+        "     2YPPPPPPPPPPY2     ",
+        "     2YPPPPPPPPPPY2     ",
+        "|||  |||===[[===||||2((|",
+        "cc=  |XXX= PP =XXX|c    ",
+        "  [  |XXX= PP =XXX|c c  ",
+        "  =  |XXX= PP =XXX|c c  ",
+        "cc=  |XXX= PP =XXX|c    ",
+        "|||  |XXX=YPPY=XXX||||||",
+        " c|  ||||||PP||||||FFFFF",
+        " c|               2  c  ",
+        " c|               2  c  ",
+        " c|22||||||  ||||||c c  ",
+        "     |FFFF|  |FFFF|     "
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_hallway_start" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "  c h| PP  PP  PP |c    ",
+        " cccc| PP  PP  PP |c6h  ",
+        " 6|||| PP |||| PP ||||F ",
+        " F|XX= PP |##| PP =XX|F ",
+        " F|XX= PP |||| PP =XX|F ",
+        "|||XX= PPPPPPPPPP =XX||2",
+        " F|||| PPPPPPPPPP ||||F ",
+        " F|htth          htth|F ",
+        " F|htth  V||||V  htth|F ",
+        "  |      ^|##|^      |F ",
+        "|||||||(((||||(((||||||2",
+        "     2YPPPPPPPPPPY2     ",
+        "     2YPPPPPPPPPPY2     ",
+        "|||  |||||h  h||||||2((|",
+        "cc=  |B ^=h  h=BB^|c    ",
+        "  [  |hd = PP =  h|c c  ",
+        "  =  |dd = PP = dd|c c  ",
+        "cc=  |h  [ PP [  h|c    ",
+        "|||  |   =    =   ||||||",
+        " c|  ||||||  ||||||FFFFF",
+        " c|  |cccc|  |F   2  c  ",
+        " c|  | 6h |  |FFFF|  c  ",
+        " c|22| c  |  ||||||c c  ",
+        "     |    |  |FFFF|     "
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  }
+]
diff --git a/data/json/mapgen/microlab/microlab_isolated_stairs.json b/data/json/mapgen/microlab/microlab_isolated_stairs.json
new file mode 100644
index 0000000000000..0083ca4ce8ec4
--- /dev/null
+++ b/data/json/mapgen/microlab/microlab_isolated_stairs.json
@@ -0,0 +1,181 @@
+[
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_stairs_down" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "#####|            |#####",
+        "#####|====    ====|#####",
+        "#####|XXX=    =XXX|#####",
+        "#####|XXX=|22|=XXX|#####",
+        "#####|====    ====|#####",
+        "##||||  YY    YY  ||||##",
+        "##|XX=    PPPP    =XX|##",
+        "##|XX=    PPPP    =XX|##",
+        "##|XX=    PPPP    =XX|##",
+        "##||||^ YYPPPPYY ^||||##",
+        "###|>2            2>|###",
+        "###|||||22||||22|||||###",
+        "#####|--22-``-22--|#####",
+        "#####|-eee-``-eee-|#####",
+        "#####|-eee-``-eee-|#####",
+        "#####|-----``-----|#####",
+        "#####||||||||||||||#####",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################"
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "`": "t_open_air", "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_isolated_stairs_odd" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "###|||############|||###",
+        "###|>||||||||||||||>|###",
+        "###|<=            =<|###",
+        "###||||=||||||||=||||###",
+        "#####|````````````|#####",
+        "#####|````````````|#####",
+        "#####|````````````|#####",
+        "#####|````````````|#####",
+        "#####||||||||||||||#####",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################"
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "`": "t_open_air", "=": "t_metal_ventilation_shutter", "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_isolated_stairs_even" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "###|||############|||###",
+        "###|>||||||||||||||>|###",
+        "###|<=            =<|###",
+        "###||||=||||||||=||||###",
+        "#####|````````````|#####",
+        "#####|````````````|#####",
+        "#####|````````````|#####",
+        "#####|````````````|#####",
+        "#####||||||||||||||#####",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################"
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "`": "t_open_air", "=": "t_metal_ventilation_shutter", "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_isolated_stairs_up" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_strconc_floor",
+      "rows": [
+        "#####|            |#####",
+        "#####|====    ====|#####",
+        "#####|XXX=    =XXX|#####",
+        "#####|XXX=|22|=XXX|#####",
+        "#####|====    ====|#####",
+        "##||||  YY    YY  ||||##",
+        "##|XX=    PPPP    =XX|##",
+        "##|XX=    PPPP    =XX|##",
+        "##||||    PPPP    ||||##",
+        "###|<2  YYPPPPYY  2<|###",
+        "###|||^          ^|||###",
+        "#####|||22||||22|||#####",
+        "#####|`óóó>``>óóó`|#####",
+        "#####|````````````|#####",
+        "#####|````````````|#####",
+        "#####|````````````|#####",
+        "#####||||||||||||||#####",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################"
+      ],
+      "palettes": [ "microlab" ],
+      "terrain": { "ó": "t_concrete", "`": "t_open_air", "X": "t_region_shrub_decorative", "P": "t_carpet_red" }
+    }
+  },
+  {
+    "type": "mapgen",
+    "om_terrain": [ [ "microlab_generic_isolated_elevator_pit" ] ],
+    "method": "json",
+    "object": {
+      "fill_ter": "t_concrete",
+      "rows": [
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "#####|||#||||||#|||#####",
+        "#####| |||<  <||| |#####",
+        "#####|            |#####",
+        "#####|            |#####",
+        "#####|            |#####",
+        "#####||||||||||||||#####",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################",
+        "########################"
+      ],
+      "palettes": [ "microlab" ]
+    }
+  }
+]
diff --git a/data/json/overmap/overmap_special/specials.json b/data/json/overmap/overmap_special/specials.json
index 31fc105e54c00..91fc3e05265cf 100644
--- a/data/json/overmap/overmap_special/specials.json
+++ b/data/json/overmap/overmap_special/specials.json
@@ -4404,6 +4404,115 @@
     "rotate": false,
     "flags": [ "LAB" ]
   },
+  {
+    "type": "overmap_special",
+    "id": "double_microlab",
+    "overmaps": [
+      { "point": [ 3, -2, -2 ], "overmap": "microlab_sub_connector_north" },
+      { "point": [ 0, -1, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 1, -1, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 2, -1, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 3, -1, -2 ], "overmap": "microlab_sub_station_north" },
+      { "point": [ 4, -1, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 5, -1, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 6, -1, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ -1, 0, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 0, 0, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 1, 0, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 2, 0, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 3, 0, -2 ], "overmap": "microlab_generic_sub_entry_north" },
+      { "point": [ 4, 0, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 5, 0, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 6, 0, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ -1, 1, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 0, 1, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 1, 1, -2 ], "overmap": "microlab_generic" },
+      { "point": [ 2, 1, -2 ], "overmap": "microlab_generic" },
+      { "point": [ 3, 1, -2 ], "overmap": "microlab_generic_hallway_start_south" },
+      { "point": [ 4, 1, -2 ], "overmap": "microlab_generic" },
+      { "point": [ 5, 1, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 6, 1, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ -1, 2, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 0, 2, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 1, 2, -2 ], "overmap": "microlab_generic" },
+      { "point": [ 2, 2, -2 ], "overmap": "microlab_generic" },
+      { "point": [ 3, 2, -2 ], "overmap": "microlab_generic_hallway_north" },
+      { "point": [ 4, 2, -2 ], "overmap": "microlab_generic" },
+      { "point": [ 5, 2, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 6, 2, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ -1, 3, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 0, 3, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 1, 3, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 2, 3, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 3, 3, -2 ], "overmap": "microlab_generic_firebreak_north" },
+      { "point": [ 4, 3, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 5, 3, -2 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 6, 3, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ -1, 4, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 0, 4, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 1, 4, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 2, 4, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 3, 4, -2 ], "overmap": "microlab_generic_stairs_down_north" },
+      { "point": [ 4, 4, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 5, 4, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 6, 4, -2 ], "overmap": "microlab_rock_border" },
+      { "point": [ 3, 4, -3 ], "overmap": "microlab_generic_isolated_stairs_odd_north" },
+      { "point": [ 3, -2, -4 ], "overmap": "microlab_sub_connector_north" },
+      { "point": [ 0, -1, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 1, -1, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 2, -1, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 3, -1, -4 ], "overmap": "microlab_sub_station_north" },
+      { "point": [ 4, -1, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 5, -1, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 6, -1, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ -1, 0, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 0, 0, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 1, 0, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 2, 0, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 3, 0, -4 ], "overmap": "microlab_generic_sub_entry_north" },
+      { "point": [ 4, 0, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 5, 0, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 6, 0, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ -1, 1, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 0, 1, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 1, 1, -4 ], "overmap": "microlab_generic" },
+      { "point": [ 2, 1, -4 ], "overmap": "microlab_generic" },
+      { "point": [ 3, 1, -4 ], "overmap": "microlab_generic_hallway_start_south" },
+      { "point": [ 4, 1, -4 ], "overmap": "microlab_generic" },
+      { "point": [ 5, 1, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 6, 1, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ -1, 2, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 0, 2, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 1, 2, -4 ], "overmap": "microlab_generic" },
+      { "point": [ 2, 2, -4 ], "overmap": "microlab_generic" },
+      { "point": [ 3, 2, -4 ], "overmap": "microlab_generic_hallway_north" },
+      { "point": [ 4, 2, -4 ], "overmap": "microlab_generic" },
+      { "point": [ 5, 2, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 6, 2, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ -1, 3, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 0, 3, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 1, 3, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 2, 3, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 3, 3, -4 ], "overmap": "microlab_generic_firebreak_north" },
+      { "point": [ 4, 3, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 5, 3, -4 ], "overmap": "microlab_generic_edge" },
+      { "point": [ 6, 3, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ -1, 4, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 0, 4, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 1, 4, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 2, 4, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 3, 4, -4 ], "overmap": "microlab_generic_isolated_stairs_up_north" },
+      { "point": [ 4, 4, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 5, 4, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 6, 4, -4 ], "overmap": "microlab_rock_border" },
+      { "point": [ 3, 4, -5 ], "overmap": "microlab_generic_isolated_elevator_pit_north" }
+    ],
+    "locations": [ "wilderness" ],
+    "city_distance": [ 3, -1 ],
+    "city_sizes": [ 1, 16 ],
+    "occurrences": [ 1, 2 ],
+    "flags": [ "LAB" ]
+  },
   {
     "type": "overmap_special",
     "id": "lab_subway_vent_shaft",
diff --git a/data/json/overmap/overmap_terrain/overmap_terrain_microlab.json b/data/json/overmap/overmap_terrain/overmap_terrain_microlab.json
index 35fdaf88c16b6..c4b7d67100c19 100644
--- a/data/json/overmap/overmap_terrain/overmap_terrain_microlab.json
+++ b/data/json/overmap/overmap_terrain/overmap_terrain_microlab.json
@@ -55,6 +55,24 @@
     "sym": "L",
     "copy-from": "microlab_sub_connector"
   },
+  {
+    "type": "overmap_terrain",
+    "id": [
+      "microlab_generic_hallway_start",
+      "microlab_generic_firebreak",
+      "microlab_generic_hallway",
+      "microlab_generic_stairs_down",
+      "microlab_generic_isolated_stairs_odd",
+      "microlab_generic_isolated_stairs_even",
+      "microlab_generic_isolated_stairs_up",
+      "microlab_generic_isolated_elevator_pit"
+    ],
+    "name": "science lab",
+    "sym": "L",
+    "color": "cyan",
+    "see_cost": 5,
+    "flags": [ "RISK_HIGH", "SOURCE_CHEMISTRY", "SOURCE_MEDICINE" ]
+  },
   {
     "type": "overmap_terrain",
     "id": "microlab_generic_surface",