Ice-caving adventures are a once-in-a-lifetime opportunity to explore stunning glacial formations across the world ...

Crystals form in caves through a complex process that involves ... These suits used tubing connected to a backpack filled with water and ice, which was then pumped through the tubing to keep ...

They are white and opaque, they seem to be ice. The sight takes your breath away ... manages to amze us with her uncomprehensible perfection. Naica’s Crystals Cave, maybe the most amazing underground ...