photos from a glacial cave under the breiðamerkurjökull glacier, which is an outlet glacier to the larger vatnajökull glacier at the northern end of jökulsárlón glacial lagoon in southern iceland.
as air bubbles, which would otherwise interfere with the passage of light, become compressed from the pressure above, the denser ice which forms the cave is better able absorb yellow and red light, giving it this vibrant blue colour.
volcanic ash, however, does become trapped in the ice, streaking certain areas of the cave with black. the glacier sits atop a volcano, whose geothermal heat carved out the cave.
photos by nicolas brousse, aron franklin, erez maron, aron franklin, iurie belegurschi and hougaard malan.
Imported from Tumblr: http://ift.tt/1RiNqrM
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