import from github

data/maps/DesertUnderpass/map.json

@@ -0,0 +1,42 @@
+{
+  "id": "MAP_DESERT_UNDERPASS",
+  "name": "DesertUnderpass",
+  "layout": "LAYOUT_DESERT_UNDERPASS",
+  "music": "MUS_MT_CHIMNEY",
+  "region_map_section": "MAPSEC_DESERT_UNDERPASS",
+  "requires_flash": false,
+  "weather": "WEATHER_NONE",
+  "map_type": "MAP_TYPE_UNDERGROUND",
+  "allow_cycling": true,
+  "allow_escaping": true,
+  "allow_running": true,
+  "show_map_name": true,
+  "battle_scene": "MAP_BATTLE_SCENE_NORMAL",
+  "connections": null,
+  "object_events": [
+    {
+      "graphics_id": "OBJ_EVENT_GFX_FOSSIL",
+      "x": 132,
+      "y": 10,
+      "elevation": 0,
+      "movement_type": "MOVEMENT_TYPE_FACE_DOWN",
+      "movement_range_x": 1,
+      "movement_range_y": 1,
+      "trainer_type": "TRAINER_TYPE_NONE",
+      "trainer_sight_or_berry_tree_id": "0",
+      "script": "DesertUnderpass_EventScript_Fossil",
+      "flag": "FLAG_HIDE_DESERT_UNDERPASS_FOSSIL"
+    }
+  ],
+  "warp_events": [
+    {
+      "x": 10,
+      "y": 12,
+      "elevation": 0,
+      "dest_map": "MAP_ROUTE114_FOSSIL_MANIACS_TUNNEL",
+      "dest_warp_id": 2
+    }
+  ],
+  "coord_events": [],
+  "bg_events": []
+}

data/maps/DesertUnderpass/scripts.inc

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+.set LOCALID_FOSSIL, 1
+
+DesertUnderpass_MapScripts::
+	map_script MAP_SCRIPT_ON_TRANSITION, DesertUnderpass_OnTransition
+	.byte 0
+
+DesertUnderpass_OnTransition:
+	setflag FLAG_LANDMARK_DESERT_UNDERPASS
+	end
+
+DesertUnderpass_EventScript_Fossil::
+	lock
+	faceplayer
+	goto_if_set FLAG_CHOSE_ROOT_FOSSIL, DesertUnderpass_EventScript_GiveClawFossil
+	goto_if_set FLAG_CHOSE_CLAW_FOSSIL, DesertUnderpass_EventScript_GiveRootFossil
+	release
+	end
+
+DesertUnderpass_EventScript_GiveClawFossil::
+	giveitem ITEM_CLAW_FOSSIL
+	removeobject LOCALID_FOSSIL
+	release
+	end
+
+DesertUnderpass_EventScript_GiveRootFossil::
+	giveitem ITEM_ROOT_FOSSIL
+	removeobject LOCALID_FOSSIL
+	release
+	end
+
+@ Unused
+DesertUnderpass_Text_FoundRootFossil::
+	.string "{PLAYER} found the ROOT FOSSIL.$"
+
+@ Unused
+DesertUnderpass_Text_FoundClawFossil::
+	.string "{PLAYER} found the CLAW FOSSIL.$"
+