By Carren Jao, Travel & Leisure
Jules Verne understood it best: you can fly around the world in 80 days and dive 20,000 leagues under the sea, but you can also find awesome otherworldly adventures right beneath your feet.
Just ask the Mexican miners who discovered a sweltering cavern filled with crystals as tall as apartment buildings. Mother Nature knows what she’s doing when it comes to creating cool underground attractions.
Ready to discover some of the earth’s coolest underground sights? Here’s where to start digging.
See all of the world’s coolest underground wonders
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