colorful geothermal hot springs with steam rising under overcast skies in an icelandic landscape

39aph39 activity adventure area attraction beauty cloudy colorful deposits earth eco ecosystem energy environment features formation geology geothermal hiking hot iceland icelandic landscape landscapes mineral natural nature outdoor overcast picturesque pools pristine relaxation remote rising rugged s scenic serenity skies springs steam sulfur surrounded terrain tourism travel turquoise unique vibrant volcanic water wellness wilderness wonders