its about an extreme bier , who goes biking in the desert . theres a crevice in the ground and he hops down. he explores the crevice for a bit and decides to climb out. but as hes climbing out , he holds onto a rock , and the big rock falls down on top of him , squishing his handinto the wall of the crevice. so hes basically stuck there for 5 days , and eventually cuts his arm off. very good movie
