Lower St Michael's Cave, Gibraltar Harbour Travel Guide

Lower St Michael's Cave, a hidden gem within Gibraltar's Upper Rock Nature Reserve, offers a unique and adventurous journey into the depths of the Rock. Unlike the well-known St Michael's Cave (also called Old St. Michael's Cave), the Lower Cave remained a secret until 1942 when Royal Engineers accidentally discovered it while creating a secondary exit for a planned emergency hospital during World War II.Stepping into Lower St Michael's Cave is like entering a subterranean cathedral. The cave is adorned with a breathtaking array of speleothems – stalactites, stalagmites, helictites, columns, flowstone, and more – showcasing nature's artistry over millennia. Shimmering in the soft light, the formations create an otherworldly ambiance, with some resembling a pulpit, chancel, and organ pipes. The highlight is the 37-meter-long underground lake, holding an estimated 200,000 liters of crystal-clear water.This cave has been preserved in its original natural state, with only minimal additions of ropes and lighting to ensure visitor safety. Exploring the Lower St Michael's Cave involves some scrambling and minor climbing, adding to the sense of adventure. Knowledgeable guides lead small groups, sharing insights into the cave's geology, history, and unique features.Visiting Lower St Michael's Cave requires a pre-booked guided tour. Tours typically last around three hours and are not suitable for children under ten years old. Comfortable clothing and sturdy, non-slip shoes are recommended. Photography is permitted, allowing visitors to capture the unforgettable beauty of this subterranean wonderland.