a close-up of a mud pot in seltun geothermal area of krysuvik in south iceland

area boiling colorful crater explore fantastic fumarole geological geology geothermal geyser ground heat hot iceland icelandic igneous journey krysuvik landmark landscape lava mud natural nature nordic orange outdoor path red reykjanes reykjanesskagi rock scenery scenic seltun smoke spring steam sulfur sulphur tectonic thermal tourism tourist travel vivid volcanic volcano wild