reykjadalur valley with hot springs river with lush green grass meadow and hills with geothermal steam. south iceland

activity background beautiful blue color environment europe fumarola fumaroles geology geothermal grass green hike hiking hot hveragerdi hverageri iceland icelandic landscape mountains natural nature outdoor park relaxation reykjadalur river scenic sky spring steam stream summer therma thermal tourism tourist trail travel trekking valley vivid volcanic water