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

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