Boulders are usually composed of the common type of rock found in the respective biome, such as Rohan rock in Rohan, Gondor rock in Gondor, Mordor rock in Mordor, etc. In other biomes where there is no special rock like these, boulders consist of regular stone. Boulders are found in most biomes, although they're not necessarily as obvious in locations where the ground is not composed of grass, such as Mordor. Boulders vary greatly in size, ranging from a small stature of 3x3x3 blocks to something the size of a small hill.
Boulders are exactly what their name implies: they are just masses of rock. Their main purpose is for decoration, but they can serve as a convenient source of stone near the surface if the player doesn't want to look underground.
Boulders are found in the following biomes:
Please note: unless otherwise stated, they are made of the rock type of the corresponding biome.
- Vales of Anduin
- Brown Lands
- Emyn Muil (plentiful, including clay variants)
- Eriador Downs
- Far Harad
- Near Harad
- Pertorogwaith (including clay and soul sand variants)
- Rohan (including waste block variants in the Uruk Highlands)
- Shire moors