Visited our first Iceland thermal features today. Gunnuhver sits in the middle of a production geothermal field. The activity consists of a perpetual spouter which has jets of water up to 8 meters high. The vent is obscured by the remnants of a boardwalk which it destroyed earlier this century.
Nearby is a large mound of siliceous sinter. It's old and heavily eroded, but there are still rock fragments featuring flow patterns and terracettes.
To the west of the recent volcanic activity is Seltún, south of Kleifarvatn. There's a large parking lot along with plumbing facilities which may or may not be open.
Next to the parking lot is a large muddy spring which was erupting gray water to about 1/2 meter. A boardwalk trail continues up the hillside past more large acid sulphate springs and numerous small spouters.
Across the road is another small thermal area consisting of two large mudpot craters. They were more of a pool than a mudpot, probably thanks to the heavy rains in the couple of days prior to our visit.
Behind the plumbing facilites is an old geothermal well. When I first looked at it, there was occasional noise coming from below ground as it there was some sort of eruption going on. About twenty minutes later, I stopped by again and the feature was quiet.
