Rock

Rocks are a multi purpose item that has been in the game since release.

Gameplay
Rocks are an unlimited natural resource that can be found lying on the floor of the forest and the beaches. The player can carry up to five rocks in inventory at a time, 10 when having a rock bag. A rock may be picked up by pressing  near it.

Rocks can be found on the ground as well as Throwable Rocks; the small ones can be thrown to distract enemies or used in the Slingshot. The rocks in the environment respawn quickly after being picked up, they will spawn in random locations. The player may have to walk a short distance away to cause them to spawn. This works in both single, and multiplayer. Throwable Rocks can be dug up by hitting the ground with an equipped stick or upgraded stick.

Trivia

 * Rocks were the first weapon to be able to perform Stealth Kills in The Forest, other weapons were added later on.