SOS

The SOS Signal is a unique building that was added in update v1.0 to The Forest.

Gameplay
Once the SOS signal has been built, a plane will spawn in the sky which will travel over the player, though a plane can spawn whether or not an SOS signal is built. It can not be alerted via any means. Shooting a flare gun shot overhead won't do anything. It appears that this feature is a gimmick or to spark controversy. When using the Ultimate Cheat Menu, you can fly after the plane. However, the closer you get, the faster it gets. It appears this was done on purpose to prevent players from seeing the plane up close. Other than all this, it can act as a decoration to increase immersion.

The SOS signal cannot be removed with the hole cutter.