La Perla Acapulco where the diver falls at around 100 kilometres per hour and plunges into less than four metres of water, scarily close to jagged rocks.
It's not surprising then that divers would pray at the cliff top shrine before diving.
Amazingly, one diver, Raul Garcia Bravo, made over 37,000 dives, the last when he was in his mid 60s.