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

They are white and opaque, they seem to be ice. The sight takes your breath away ... ranging from refrigerated suits to “crystal-friendly” boots, in order to guarantee a long, safe stay in the cave ...

As such, they are believed to be the purest form of selenite crystal in ... the interior of the cave. These suits used tubing connected to a backpack filled with water and ice, which was then ...