We start the day with a drive from Reykjavík to Seltún (about 1 hour). The natural geothermal mud pools boiling in the hillside just off Kleifarvatn have pretty strong smell of sulphur and people in the past were of the opinion that this was some sort of a gateway to Hell. The surrounding ground has a light colour which is a strong contrast to the dark lava fields just a little further on and the mud in the pools is mostly a greyish mixture of clay and geothermal water slowly bubbling away.

Kleifarvatn Lake

The largest lake on the Reykjanes peninsula hidden between the mountains not far from the outskirts of Reykjavík known for its natural beauty. Around 8km2 and almost a 100m deep. After a series of earthquakes in 2000 the lake lost almost 20% of its surface and still seems to be losing volume although at a very slow rate. In 2000, as the lake shrunk some curious boxes appeared on the exposed lakebed, their content was later identified as Russian spying equipment dating back to the cold war.