Mountain

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Mountains, or hills, in RimWorld, are a natural structure that contain resources and special rooms.

Shells fired from mortars or drop pods will break through constructed roofing but not through overhead mountains (or any tile underneath one).

Resources

Many resources can naturally be found in mountains, such as minerals, stone, and even loot!

Minerals/Metals

Minerals and metals come in deposits called veins. They can be found in mountains and hills. They are found easier if the terrain that you landed on is either: Small Hills, Large Hills, or Mountainous.

Resource	Drops (Max)	Vein Size	Hitpoints	Rarity	Mining Speed
Steel	40	20-40	1,500	Common	Fast
Jade	40	1-6	1,500	Rare	Fast
Component	2	3-6	2,000	Common	Moderately Fast
Gold	40	1-6	1,500	Rare	Fast
Uranium	40	1-6	4,000	Very Rare	Slow
Silver	40	4-12	1,500	Uncommon	Fast
Plasteel	40	10-50	8,000	Uncommon	Very Slow

Roofs

The roof type of mountains can be overhead mountain or thin stone roofs. Transport pods and mortar shells cannot break overhead mountain but can break thin stone roofs. However, overhead mountain is prone to insect infestations. Overhead mountain cannot be removed. Caution is advisable when mining in mountains - while thin stone roof collapses can injure the heads and necks of pawns and even occasionally kill, overhead mountain will bury them alive, instantly killing them and utterly destroying their body and everything they had equipped, preventing both resurrection and salvage. This will form collapsed rocks to act like a pillar.

Ancient shrines

Main article: Ancient shrine

These ancient buildings are can be partially or entirely buried in mountains and hills. Shrines can contain valuable items only otherwise obtained from quests or trading. They are guarded by mechanoids or insectoids, and contain mysterious cryptosleep caskets containing ancient soldiers trapped inside for millenia. They are equipped with spacer tech gear, and can kill your colonists if you are not prepared.

Version history

• 0.13.1135 - Deep rooms (i.e. under Mountains) stay cool in the heat