diff --git a/_maps/RandomRuins/LavaRuins/lavaland_surface_ww_vault.dmm b/_maps/RandomRuins/LavaRuins/lavaland_surface_ww_vault.dmm
index 58cc5c1e60a..2890b4954b3 100644
--- a/_maps/RandomRuins/LavaRuins/lavaland_surface_ww_vault.dmm
+++ b/_maps/RandomRuins/LavaRuins/lavaland_surface_ww_vault.dmm
@@ -131,8 +131,8 @@
 	},
 /turf/open/floor/engine/cult{
 	baseturf = /turf/open/floor/plating/lava/smooth;
-	blocks_air = 1
 	},
+/obj/structure/fans/tiny/invisible,
 /area/ruin/powered)
 "D" = (
 /turf/open/floor/engine/cult{
diff --git a/code/modules/mining/mine_items.dm b/code/modules/mining/mine_items.dm
index 9be3b650f8a..1e807689191 100644
--- a/code/modules/mining/mine_items.dm
+++ b/code/modules/mining/mine_items.dm
@@ -454,6 +454,12 @@
 	. = ..()
 	T.air_update_turf(1)
 
+//Inivisible, indestructible fans
+/obj/structure/fans/tiny/invisible
+	name = "air flow blocker"
+	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
+	invisibility = INVISIBILITY_ABSTRACT
+
 
 //Signs
 /obj/structure/sign/mining