Clay

Clay is a mineral found in the Forest Caves. It is a basic natural resource gathered from the underground cave layer rather than from surface exploration, making it part of the early mining materials a player can encounter while moving deeper into the world.

As a cave resource, Clay is tied to exploration of Forest Caves and is primarily relevant as a collectible item obtained from that environment. Since no additional gameplay details are given in the available source, its known role is simply as a mineral resource originating from that biome.