Mexico’s Las Golindrinas is one of the world’s largest subterranean caves, with a vertical drop of more than 1,400 feet from the top to the bottom. Nicknamed the “Black Hole” by serious cavers, it’s the Granddaddy of the Big Pits, one of the most spectacular drops on the planet. Only the seasoned of cavers have conquered the Black Hole, and nobody has captured it on camera, until now. Our group of exceptional climbers, challenge the powers of nature during this extreme caving expedition. Plus, see one of the world’s top skydivers attempt to be the first to fly “under canopy” into this amazing natural phenomenon!