The tunnels, leftovers from the failed mining experiment on the island, are rather simple in their construction, with their main branches leading into the quarry and heading out towards the isolated cabin. While the entrance from the quarry is still clear, the entrance from the cabin is overgrown with thick foliage. It is hard to breathe and almost impossible to see without a light source down in the mines. These tunnels stretch all throughout the northern and western parts of the island, allowing access at several points in the coastal woods and near the beach.