Into the Matrix Achievement in Goat Simulator 3

This achievement requires you to first find the hobbit house in Fairmeadow Ranch. Location shown in the screenshot below. Headbutt the door down to get inside and grab the ring inside (piece of gear).




Now take the ring (you can fast travel to the nearby tower) to the lava section (aka Mount Doom) in the center of the map. Screenshot below. There's a cave entrance in the lava. Head inside and jump into the lava below while wearing the ring. This will teleport you to the trainstation and unlock this achievement. Head straight ahead into the light to leave.