N 65.62640°, W 16.88251°
From the lava fields we headed a short distance to Hverir where there are some spectacular boiling mud pools and large fumaroles where stinking steam comes whistling through the earth's surface like a giant boiling kettle.
From here we started to head for lake Myvatn - which reportedly hosts the most breeding duck species in Europe - but almost immediately stumbled upon a small cave system called Grótagjá (coordinates shown) that was apparently created as lava cooled. Flooding the floor of the cave is a water body that's heated to about 40 deg C. Apparently bathing used to be allowed but is now banned; pity as it would have been an experience to have lounged in toasty-warm subterranean water.
The surreal theme continues, every hour of every day gives up something utterly weird or spectacular.
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