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Hidden beneath Upholland, Lancashire, England, the Dragon"s Eye cave remains a clandestine, abandoned mine shaft. Known only to a select few urban explorers and locals, its precise location is a closely guarded secret. Accessible solely through a "window in the floor," the cave boasts an underground rock formation dubbed the "Dragon"s Eye," evoking scenes from an Indiana Jones adventure. Despite its mystery, the cave"s extreme heat, with air temperatures soaring to 58°C (136°F), presents a formidable challenge. Remarkably, the largest crystal discovered within measures a staggering 12 meters (39 feet) in length, 4 meters (13 feet) in diameter, and weighs a colossal 55 tons.Read more >> https://coolfactz.com/10-hidden-gems-of-nature-you-need-to-visit-before-theyre-gone/