Naica Mine, Mexico This silver mine is coated in crystals as big as 50 feet long and 4 feet wide. They Were formed by hydrothermal fluids rising from the magma chambers below. This is a must see on any cave lover’s bucket list.
Cave of the Crystals or Giant Crystal Cave is a cave connected to the Naica Mine 300 metres below the surface in Naica, Chihuahua, Mexico. The main chamber contains giant selenite crystals, some of the largest natural crystals ever found.