From the Telegraph's Pictures of the Day for 26 November 2013: British photographer Alex Bradbury, from Leamington Spa, walked over a glacier to reach this waterfall falling through crystal clear ice caves. The hidden caverns of ice appear temporarily at the edge of glaciers, in this case at the south side of Vatnajokull National Park in South-East Iceland. The lack of air in the ice means that it absorbs all visible light, apart from the blue fraction which creates the stunning colours. [ALEX BRADBURY / CATERS NEWS]Wow. It's always amazing to me how parts of the Earth can look so alien.
Posted by Melissa McEwan at Tuesday, November 26, 2013