Ficho Tunnel

Ficho Tunnel is a tunnel that has the entrances to Bonfire Island and Fluorite Plains. It is the only official tunnel map in the game. It has a waterfall that prevents players from going back to Bonfire Island and has a river that leads to the entrance to Fluorite Plains. It has two pieces of background music, which can be replaced if the player wishes to do so. This is the only map in the game that has a glitch.

Glitch
In Ficho Tunnel, players can perform a glitch which takes them to the top of the walls of the tunnel. This is done through the means of taking a screenshot. This is one of the ways to get back to Bonfire Island if the character dosen't have the island as it's home.

To perform the glitch, a character must try to climb the walls of the tunnel. Some walls work better than others since some of them have slopes at the bottom of the walls. When trying to climb a wall, the player must take a screenshot (Print Screen key by default). This will shift them to the top of the walls. When on top of the walls, the player cannot jump as they are techically already touching the ceiling.

The glitch also reveals that outside the rocky surface of the tunnel is a huge lake of water. Unfortunately this lake cannot be accessed, even if the player tries to fall down into it.

To get back onto ground level, characters simply have to run off the walls.