Claustrophobic cave challenge

Are you claustrophic? No? Really? Then I have just the cave for you... A 13-minute orgy of squeezing that reminds you of what "tight" reallly means. This is not a fast-paced video: you can't move quickly when there is hardly room to move at all... What if the lights go out? Petzl lights have never failed me, in 25 years. Oh, and backups. Why do such a thing? For fun obviously; and for the challenge, the puzzle-solving, the friendship with people you can trust. Training for cave rescue. And you get to know yourself, too