code/game/turfs/closed/minerals.dm 
| /turf/closed/mineral | Mineral deposits |
|---|---|
| /turf/closed/mineral/snowmountain/do_not_chasm | Near exact same subtype as parent, just used in ruins to prevent other ruins/chasms from spawning on top of it. |
| /turf/closed/mineral/snowmountain/icemoon/unscrapeable | This snowy mountain will never be scraped away for any reason what so ever. |