Hraunfossar and Barnafoss

Thanks Falxcerebri for the submission.

Hraunfossar is a very unusual sort of waterfall. Since the lava in this valley isn’t very old, it is porous. This means the water flows easily through the spongelike lava instead of over it. Above the waterfall you will find no river at all. Underneath the lava layer there is an older and much harder layer which the water flows on top of. These pictures illustrate it very well. There’s another closeup of the waterfall here.

A small crop of a much larger waterfall, called Hraunfossar. Water flows through the young porous lava field and flows into the large Hvítá river close to Húsafell in Iceland.

A small crop of a much larger waterfall, called Hraunfossar. Water flows through the young porous lava field and flows into the large Hvítá river close to Húsafell in Iceland.

(Source: cornersoftheworld)