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"A spectacular UNESCO-listed Karst cave system near Slovenia’s coast, this network discovered in 1823 offers a 5km itinerary through vast chambers adorned with stalactites and stalagmites, including the 15m-tall Giant. Highlights include the prehistoric cave, the Silent Cave, Martel’s Chamber, and the magnificent Chamber of Rimstone Pools, with the route also crossing one of the world’s deepest underground canyons. Situated about 15km from the Italian border, it is renowned for both extraordinary beauty and geological importance." - La Guida Michelin