"One of my most memorable trips was to the volcanically active and very remote region of central Askja, Iceland, in July 1967.
Known for its volcanic craters called calderas, this region had a very rocky terrain with black volcanic sand, as well as a large lake and hot springs.
It was a misty, surreal place unlike anything I’d ever seen in my travels. And because we were there during the summer it seemed like the sun never set.”
-Edgar Mitchell, Apollo 14 Astronaut