This ice cave was one stemming from the tongue of a glacier flowing from Mount Erebus, one of the most powerful volcanoes of Antarctica.

He’s wearing a white helmet with his name and “Cave Rescue” printed on it. Cartaya is worried because the sun is starting to rise and hit the ice. His climbing partner Brent McGregor follows ...

It calves massive icebergs into Disenchantment Bay ... It's also home to crystal-blue ice caves that form in winter. High in the mountains of Sichuan, Hailuogou Glacier has something most glaciers ...