the great geysir, geyser in iceland

activity area beauty blue boiling brown bubble central circle cloud color colored crater danger destinations energy erupting europe famous flowing geological geology geothermal geyser geysir gold golden grass green haukadalur heat hot iceland incrustation island lake land landmark landscape locations majestic man mineral national nature outdoors overcast park people physical place pond power pressure residues rock sky spring steam stokkur stream strokkur summer sunlight sunny tectonic temperature tourism tourist travel tree turquoise valley vibrant volcanic volcano water yellow