Upon arriving in the Myvatn volcanic region and having a quick crepe dinner, we headed to the Hverfjall crater (also known as Hverfell). It is a tephra cone or tuff ring volcano which erupted in 2500 BC in the southern part of the Krafla fissure swarm. The crater is approximately 1 km in diameter. It is rather unique because it look like a human made pile of gravel. Apparently it was formed with an incredible explosion when a magma pocket met and underground river. There is no lava anywhere, just little volcanic rocks everywhere.
The pictures were taken between 11:20PM and 12:20AM !!! the sun disappeared in the clouds at about 11:50PM.
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