Here is another example of basalt columns. This is from the Black Beach west of Vik. The sand consists of grains of black volcanic rock, and even faint sunlight will make the sand warm to the touch. (And for the fans of Bon Iver, if you have seen the "Holocene" video, these are the very columns the boy is climbing on towards the end of the video. You'll find the video on Vimeo.)
PhaseOne 645DF, IQ160, Schneider Kreuznach LS 80mm f/2.8 - ISO50 f/9 at 1/30s