The Cave of Swallows in San Luis PotosÃ, Mexico is the largest cave shaft in the world, second deepest pit in Mexico and the 11th deepest in the world ! ( the high point provides a 1220 feet (372 m) freefall drop ).This cave had been a favorite BASE jumping site from the 70’s until it was officially closed to jumping in 2002. When BASE jumping was still allowed, an enthusiast could expect a jump to last about twelve seconds from his initial leap to reaching the floor of the shaft. But going down was only half the fun. The only way back up was...the reason BASE jumping is not allowed there anymore. Some of the BASE outfitters were using a motorized winch system to lift the jumpers to the surface after their jump which made the authorities ban the sport.
BASE jumping organizers are attempting to work with the local, state, and federal governments to once again be allowed to enjoy the cave. For now it is illegal to jump with a parachute or use a motorized winch near Cave of Swallows.
But rappelling and ascending out is still allowed. Same as with BASE jumping, absailing ( descending ) is fun, but going back up is the real challenge. A caver would have to climb up a single rope, using rope clamps, which is very exhausting. It is at least 40 mins of enormous exertion, even for extremely fit cavers a hard fight. For normal, physically fit people it more or less two hours of ascend.
Also, the floor of the pit is covered with piles of dung from the millions of birds. This dung, the rainwater, and debris from the surface are the food base to numerous animals on the cave floor. There are millipedes and insects, snakes, and scorpions. The air is filled with smells, fungi and bacteria. It is possible to visit the floor without respiration mask, but cavers who want to explore the corners of the cave should bring such equipment. There is always the danger of Histoplasmosis and other diseases.
So, for now enjoy the vidoe !
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