diff --git a/src/basecamp.cpp b/src/basecamp.cpp
index d744a24c6f852..a62e090d03ad1 100644
--- a/src/basecamp.cpp
+++ b/src/basecamp.cpp
@@ -621,12 +621,8 @@ void basecamp::form_crafting_inventory( map &target_map )
         mgr.cache_vzones();
     }
     if( mgr.has_near( z_camp_storage, dump_spot, 60 ) ) {
-        const std::unordered_set<tripoint> &src_set = mgr.get_near( z_camp_storage, dump_spot, 60 );
-        for( const tripoint &src : src_set ) {
-            for( const item &it : target_map.i_at( target_map.getlocal( src ) ) ) {
-                _inv.add_item( it );
-            }
-        }
+        std::unordered_set<tripoint> src_set = mgr.get_near( z_camp_storage, dump_spot, 60 );
+        _inv.form_from_zone( target_map, src_set, nullptr, false );
     }
     /*
      * something of a hack: add the resources we know the camp has
diff --git a/src/inventory.cpp b/src/inventory.cpp
index 441ab9eed1570..a56efa0e15889 100644
--- a/src/inventory.cpp
+++ b/src/inventory.cpp
@@ -398,6 +398,16 @@ void inventory::form_from_map( const tripoint &origin, int range, const Characte
     form_from_map( g->m, origin, range, pl, assign_invlet, clear_path );
 }
 
+void inventory::form_from_zone( map &m, std::unordered_set<tripoint> &zone_pts, const Character *pl,
+                                bool assign_invlet )
+{
+    std::vector<tripoint> pts;
+    for( const tripoint &elem : zone_pts ) {
+        pts.push_back( m.getlocal( elem ) );
+    }
+    form_from_map( m, pts, pl, assign_invlet );
+}
+
 void inventory::form_from_map( map &m, const tripoint &origin, int range, const Character *pl,
                                bool assign_invlet,
                                bool clear_path )
@@ -414,9 +424,14 @@ void inventory::form_from_map( map &m, const tripoint &origin, int range, const
             reachable_pts.emplace_back( p );
         }
     }
+    form_from_map( m, reachable_pts, pl, assign_invlet );
+}
 
+void inventory::form_from_map( map &m, std::vector<tripoint> pts, const Character *pl,
+                               bool assign_invlet )
+{
     items.clear();
-    for( const tripoint &p : reachable_pts ) {
+    for( const tripoint &p : pts ) {
         if( m.has_furn( p ) ) {
             const furn_t &f = m.furn( p ).obj();
             const itype *type = f.crafting_pseudo_item_type();
@@ -583,7 +598,7 @@ void inventory::form_from_map( map &m, const tripoint &origin, int range, const
             add_item( chemistry_set );
         }
     }
-    reachable_pts.clear();
+    pts.clear();
 }
 
 std::list<item> inventory::reduce_stack( const int position, const int quantity )
diff --git a/src/inventory.h b/src/inventory.h
index 308a40a3ab452..b0ca34c60324d 100644
--- a/src/inventory.h
+++ b/src/inventory.h
@@ -7,9 +7,11 @@
 #include <list>
 #include <string>
 #include <unordered_map>
+#include <unordered_set>
 #include <bitset>
 #include <utility>
 #include <vector>
+#include <set>
 #include <limits>
 #include <functional>
 #include <map>
@@ -125,12 +127,16 @@ class inventory : public visitable<inventory>
          * the player's worn items / weapon
          */
         void restack( player &p );
+        void form_from_zone( map &m, std::unordered_set<tripoint> &zone_pts, const Character *pl = nullptr,
+                             bool assign_invlet = true );
         void form_from_map( const tripoint &origin, int range, const Character *pl = nullptr,
                             bool assign_invlet = true,
                             bool clear_path = true );
         void form_from_map( map &m, const tripoint &origin, int range, const Character *pl = nullptr,
                             bool assign_invlet = true,
                             bool clear_path = true );
+        void form_from_map( map &m, std::vector<tripoint> pts, const Character *pl,
+                            bool assign_invlet = true );
         /**
          * Remove a specific item from the inventory. The item is compared
          * by pointer. Contents of the item are removed as well.