A potentially deadly challenge! The contestant is placed in a plexiglass box with holes on top. The two top pieces are chained together and locked with two locks. The contestant is given a gas mask to wear and a keyring with twelve keys on it. Two of the keys will open the locks; the other ten are duds. When time starts, the Chicos Oca begin pouring sand through the holes and thus onto the contestant. The contestant, meanwhile, must find a key which opens a lock, and then must repeat the process for the other lock. When the two locks are unlocked, the contestant must escape through the top. Time limit: 2:00