The clay canyons of Sog in Reykjanes Unesco Global Geopark – Iceland are a breathtaking sight to behold. Sog is a depression in the Vesturháls hyaloclastite ridge. The area is colourful due to intense high-temperature alteration and a few mud pools and solfataras. West of Sog, on the lower slopes of the Vesturháls ridge is a row of explotion craters.
Within the biggest of these craters are ancient ruins of seter-farms. Further south are smaller explotions craters. On top of the Vesturháls south of Sog are two beautiful small lakes, Spákonuvatn and Grænavatn. On the plain west of Sog there are numerous steaming vents in a lava flow.