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The World's Largest Natural Arch Is A Secret Stone Landmark Towering Over A River In China
Hidden within a unique geological park in China is the world's largest natural arch. Its magnificent, awe-inspiring beauty ...
Cave ecosystems thrive in the dark. What happens when tourists light them up?
In Belize’s Actun Tunichil Muknal cave, a sacred Maya site, plants grow in darkness, sparking concerns about how tourism affects its fragile ecosystem.