on the edge of the world

When getting close to the mountain in the middle of a heavy rain and waters coming down from the summit of the mountain Wilson looks to the left and right side but he doesn't find a shelter or a cave, but trees and bushes around him, soon he picks up branches of tree that he saw and leaves of straw, near a big tree and makes a shelter throwing the leaves over the branches, and spent the whole night inside the shelter.After the heavy rain passed wilson begins his journey, with ropes and moorings inside from his backpack he throws his rope on a rock on the mountain and starts the climb, when he gets close to the top he finds a cave that was hidden in the middle of a boulder, Wilson takes these stones and enters the cave soon he notices that it was very dark he looks in his backpack and takes a flashlight, pointing the flashlight forward Wilson in what the cave had an immense depth, curious wilson followed his journey forward after an hour walking in a straight line he finds two entrances u but to his left and another to his right, and on the right an ancient symbol was marked above the entrance, he keeping his curiosity he chose the right path, and after a twenty minute walk he realized that time and the walls were getting worse more and more different from what he was used to and the entrance was getting narrower, after an hour walking Wilson looks down and finds a tunnel without knowing the deep wilson thinks "I've come this far so there's no turning back" wilson if you play in this tunnel not knowing where to go.