diff --git a/src/actions.cc b/src/actions.cc
index 292e5ce..8368546 100644
--- a/src/actions.cc
+++ b/src/actions.cc
@@ -48,6 +48,9 @@ typedef enum ScienceRepairTargetType {
 // 0x5106D0
 static bool _action_in_explode = false;
 
+// 0x5106D4
+int rotation;
+
 // 0x5106E0
 static const int gNormalDeathAnimations[DAMAGE_TYPE_COUNT] = {
     ANIM_DANCING_AUTOFIRE,
diff --git a/src/actions.h b/src/actions.h
index 67d425f..86c0f31 100644
--- a/src/actions.h
+++ b/src/actions.h
@@ -6,6 +6,8 @@
 
 namespace fallout {
 
+extern int rotation;
+
 int _action_attack(Attack* attack);
 int _action_use_an_item_on_object(Object* a1, Object* a2, Object* a3);
 int _action_use_an_object(Object* a1, Object* a2);
diff --git a/src/mapper/map_func.cc b/src/mapper/map_func.cc
index 92a96fa..1fcd136 100644
--- a/src/mapper/map_func.cc
+++ b/src/mapper/map_func.cc
@@ -1,13 +1,17 @@
 #include "mapper/map_func.h"
 
+#include "actions.h"
 #include "color.h"
 #include "game_mouse.h"
 #include "input.h"
+#include "map.h"
 #include "memory.h"
 #include "mouse.h"
 #include "proto.h"
 #include "svga.h"
+#include "tile.h"
 #include "window_manager.h"
+#include "window_manager_private.h"
 
 namespace fallout {
 
@@ -26,6 +30,32 @@ void copy_proto_lists()
     // TODO: Incomplete.
 }
 
+// 0x482708
+void place_entrance_hex()
+{
+    int x;
+    int y;
+    int tile;
+
+    while (inputGetInput() != -2) {
+    }
+
+    if ((mouseGetEvent() & MOUSE_EVENT_LEFT_BUTTON_DOWN) != 0) {
+        if (_mouse_click_in(0, 0, _scr_size.right - _scr_size.left, _scr_size.bottom - _scr_size.top - 100)) {
+            mouseGetPosition(&x, &y);
+
+            tile = tileFromScreenXY(x, y, gElevation);
+            if (tile != -1) {
+                if (tileSetCenter(tile, TILE_SET_CENTER_FLAG_IGNORE_SCROLL_RESTRICTIONS) == 0) {
+                    mapSetEnteringLocation(tile, gElevation, rotation);
+                } else {
+                    win_timed_msg("ERROR: Entrance out of range!", _colorTable[31744]);
+                }
+            }
+        }
+    }
+}
+
 // 0x4841C4
 void pick_region(Rect* rect)
 {
diff --git a/src/mapper/map_func.h b/src/mapper/map_func.h
index 71517e9..ff06627 100644
--- a/src/mapper/map_func.h
+++ b/src/mapper/map_func.h
@@ -7,6 +7,7 @@ namespace fallout {
 
 void setup_map_dirs();
 void copy_proto_lists();
+void place_entrance_hex();
 void pick_region(Rect* rect);
 void sort_rect(Rect* a, Rect* b);
 void draw_rect(Rect* rect, unsigned char color);