Ice Cave, Breiðamerkursjökull, IcelandI've crawled into a few ice caves over the years, and the first thing that hits you is the silence. Then the cold. Then you look up and realise you're standing inside something that won't exist in six months. Breiamerkursjkull's caves reform each winter and collapse each spring, so nothing you photograph here is repeatable. What fascinated me about this particular chamber was the volcanic sediment banded through the ice. Dark streaks of basalt debris,