seltun geothermal area in krysuvik with steaming hot springs, yellow and orange sulphur hills, iceland

area boardwalk boiling bubbling car colorful field footpath fumarole geology geothermal hill hot spring iceland icelandic krysuvik landscape mud pot nature orange outdoor parking path peninsula people platform pool reykjanes reykjanesskagi rock seltun seltunshverir simmering smoke soil solfataras steam sulfur sulphating sulphur tourism tourist travel vent volcanic volcano walk water wooden yellow