ladder and chasm fix

_maps/map_files/Mining/Lavaland_Lower.dmm

@@ -4759,10 +4759,9 @@
 /turf/open/floor/plating,
 /area/xenoarch/gen)
 "kT" = (
-/obj/machinery/quantumpad/always_powered{
-	name = "To mining";
-	map_pad_id = "to_mining";
-	map_pad_link_id = "from_mining"
+/obj/structure/ladder/unbreakable{
+	height = 1;
+	id = "xenoarch"
 	},
 /turf/open/floor/plasteel/dark,
 /area/xenoarch/gen)

code/__DEFINES/maps.dm

@@ -73,6 +73,7 @@ require only minor tweaks.
 #define ZTRAITS_STATION list(ZTRAIT_LINKAGE = CROSSLINKED, ZTRAIT_STATION = TRUE)
 #define ZTRAITS_SPACE list(ZTRAIT_LINKAGE = CROSSLINKED, ZTRAIT_SPACE_RUINS = TRUE)
 #define ZTRAITS_LAVALAND list(\
+	ZTRAIT_DOWN = -1, \
     ZTRAIT_MINING = TRUE, \
 	ZTRAIT_ASHSTORM = TRUE, \
     ZTRAIT_LAVA_RUINS = TRUE, \

code/controllers/subsystem/mapping.dm

@@ -310,9 +310,9 @@ SUBSYSTEM_DEF(mapping)
 
 	// load mining
 	if(config.minetype == "lavaland")
-		LoadGroup(FailedZs, "Lavaland", "map_files/Mining", "Lavaland.dmm", default_traits = ZTRAITS_LAVALAND)
 		LoadGroup(FailedZs, "Lavaland_Lower", "map_files/Mining", "Lavaland_Lower.dmm", default_traits = ZTRAITS_LAVALAND_UNDERRGOUND)
 		LoadGroup(FailedZs, "Lavaland_Demone", "map_files/Mining", "Lavaland_Demone.dmm", default_traits = ZTRAITS_LAVALAND_UNDERRGOUND)
+		LoadGroup(FailedZs, "Lavaland", "map_files/Mining", "Lavaland.dmm", default_traits = ZTRAITS_LAVALAND)
 		LoadGroup(FailedZs, "Fast_Food", "map_files/gs13", "Fast_Food.dmm", default_traits = ZTRAITS_FASTFOOD) //GS13
 	else if (!isnull(config.minetype) && config.minetype != "none")
 		INIT_ANNOUNCE("WARNING: An unknown minetype '[config.minetype]' was set! This is being ignored! Update the maploader code!")