Today I remembered I haven’t made a post about one of the coolest place I’ve heard of: Cave of the Crystals, which was accidentally discovered in 2000 by miners at Naica, Mexico. It contains giant selenite crystals, the largest crystals found by far. The cave’s largest one found to date is 12 m (39 ft) in length.

It’s one of the most extreme places on the planet as it lies almost 300 meters (900 feet) below the surface of the Earth, reaching air temperatures up to 58°C (136°F) with 90 to 99 percent humidity. Also, there’s a risk of falling into deep pits or on a sharp crystal.

The magical surroundings probably outweigh those factors. One of the teams exploring Cave of the Crystals said that it was like setting foot on a new planet. more about their expedition at