The Cave of Crystals is an amazing place.One visitor described it as "like a child's dream." The huge Crystals are possible because of the hot,wet conditions in the cave.However, those same conditions also make it impossible for humans to stay in cave for very long.
The temperature of the Cave of Crystals is 45c. That is almost as hot as the hottest days in the Sahara Desert. You can't just walk in. You need to prepare carefully and wear special clothes.First,you have to put on a vest,which has more than 12 ice packs across the front and back.After this comes another veat.This keeps the heat aways from the ice.Over this,you have to wear a bright orange caving suit.You also need a mask that blows ice-cooled air.Then there is the helmet with a headlamp.Finally,you need to put on gloves and boots.
Even with all this protection,being inside the cave is very tiring.Most people don't go inside for more than 20 minutes.Even a few minute can be enough.
However,visitors to the cave think its beauty is worth the difficulty.In the words of another explorer,it's as though you are "standing inside a star."