because why the fuck not (#13382)

_maps/RandomRuins/LavaRuins/skyrat/lavaland_surface_ash_walker1_skyrat.dmm

@@ -105,8 +105,8 @@
 "fC" = (
 /obj/structure/headpike/bone,
 /obj/effect/mapping_helpers/no_lava,
-/turf/open/misc/asteroid/basalt/lava_land_surface,
-/area/lavaland/surface/outdoors)
+/turf/template_noop,
+/area/template_noop)
 "gn" = (
 /obj/structure/stone_tile/block/burnt{
 	dir = 8
@@ -116,9 +116,6 @@
 	},
 /turf/open/lava/smooth/lava_land_surface,
 /area/ruin/unpowered/ash_walkers)
-"hg" = (
-/turf/closed/mineral/volcanic/lava_land_surface,
-/area/lavaland/surface/outdoors)
 "hL" = (
 /obj/item/reagent_containers/glass/bucket/wooden{
 	desc = "If this bucket is used for anything other than clean water, the user is to hunt the tribes dinner, and make a new bucket.";
@@ -1375,9 +1372,6 @@
 /obj/structure/headpike/bone,
 /turf/open/misc/asteroid/basalt/lava_land_surface,
 /area/ruin/unpowered/ash_walkers)
-"RG" = (
-/turf/closed/mineral/volcanic/lava_land_surface,
-/area/ruin/unpowered/ash_walkers)
 "RK" = (
 /obj/structure/stone_tile/surrounding_tile{
 	dir = 8
@@ -1637,8 +1631,8 @@
 /area/ruin/unpowered/ash_walkers)
 "XV" = (
 /obj/effect/mapping_helpers/no_lava,
-/turf/open/misc/asteroid/basalt/lava_land_surface,
-/area/lavaland/surface/outdoors)
+/turf/template_noop,
+/area/template_noop)
 "Zi" = (
 /obj/structure/stone_tile{
 	dir = 4
@@ -1678,57 +1672,57 @@ mv
 mv
 mv
 mv
-RG
-RG
-RG
-RG
-RG
-RG
-RG
-RG
-RG
-RG
-hg
-hg
-hg
-hg
-hg
-hg
-hg
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
 "}
 (2,1,1) = {"
 mv
 mv
 mv
 mv
-RG
-RG
-RG
-RG
+bH
+bH
+bH
+bH
 JD
 JD
 JD
 JD
-RG
-RG
-RG
-RG
-hg
-hg
-hg
-hg
-hg
-hg
-hg
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
 "}
 (3,1,1) = {"
 mv
 mv
 bH
-RG
-RG
-RG
-RG
+bH
+bH
+bH
+bH
 JD
 tl
 mZ
@@ -1736,22 +1730,22 @@ mZ
 mZ
 JD
 JD
-RG
-RG
-RG
-RG
-RG
-RG
-RG
-hg
-hg
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
+bH
 "}
 (4,1,1) = {"
 mv
 bH
 bH
-RG
-RG
+bH
+bH
 Ly
 Ly
 Ly
@@ -1761,7 +1755,7 @@ mZ
 mZ
 mZ
 JD
-RG
+JD
 Vr
 Vr
 Vr
@@ -1775,7 +1769,7 @@ XV
 bH
 bH
 bH
-RG
+bH
 JD
 Ly
 uM
@@ -2344,7 +2338,7 @@ Ly
 Ly
 Ly
 XV
-hg
+bH
 "}
 (28,1,1) = {"
 bH
@@ -2369,7 +2363,7 @@ Zi
 Ny
 Ly
 XV
-hg
+bH
 "}
 (29,1,1) = {"
 bH
@@ -2394,7 +2388,7 @@ OG
 MS
 Ly
 XV
-hg
+bH
 "}
 (30,1,1) = {"
 bH
@@ -2419,16 +2413,16 @@ MF
 px
 Ly
 XV
-hg
+bH
 "}
 (31,1,1) = {"
 mv
 bH
 bH
-RG
-RG
-RG
-RG
+bH
+bH
+bH
+bH
 Ly
 PB
 dw
@@ -2450,10 +2444,10 @@ XV
 mv
 bH
 bH
-RG
-RG
-RG
-RG
+bH
+bH
+bH
+bH
 Ly
 Ly
 Ly

modular_skyrat/modules/mapping/code/icemoon.dm

@@ -18,3 +18,12 @@
 	description = "The Iceminer arena."
 	suffix = "icemoon_underground_mining_site_skyrat.dmm"
 	always_place = TRUE
+
+/datum/map_template/ruin/icemoon/underground/skyrat/ashwalker_nest
+	name = "Ash Walker Nest"
+	id = "ash-walker-ice"
+	description = "An ashen ruin all the way out here... There's something strange about this."
+	prefix = "_maps/RandomRuins/LavaRuins/skyrat/"
+	suffix = "lavaland_surface_ash_walker1_skyrat.dmm"
+	always_place = TRUE
+	allow_duplicates = FALSE

modular_skyrat/modules/mapping/code/mob_spawns.dm

@@ -1,4 +1,11 @@
 //SPAWNERS//
+
+/obj/effect/mob_spawn/ghost_role/human/ash_walker/special(mob/living/carbon/human/spawned_human)
+	. = ..()
+	if(SSmapping.level_trait(spawned_human.z, ZTRAIT_ICE_RUINS_UNDERGROUND) || SSmapping.level_trait(spawned_human.z, ZTRAIT_ICE_RUINS_UNDERGROUND))
+		ADD_TRAIT(spawned_human, TRAIT_NOBREATH, ROUNDSTART_TRAIT)
+		ADD_TRAIT(spawned_human, TRAIT_RESISTCOLD, ROUNDSTART_TRAIT)
+
 /obj/effect/mob_spawn/ghost_role/human/blackmarket
 	name = "cryogenics pod"
 	prompt_name = "a blackmarket dealer"