*** Spoiler - click to reveal *** After crossing the bridge and taking a nap you'll come across two paths. You'll want to go right, and then inspect the tree. The combination of the switches in the tree is, "Left, right, right." This will cause the ground to open up, and you'll fall in. There will be three different paths you can take. You'll want to go left, and then right. You'll enter a room with several places to go. Enter the middle room, and eventually you'll be eaten by a dog like creature who leaves nothing but an achievement.