The Yampah Spring, which feeds this mineral pool, gushes over 3 million gallons ... volume of its mineral waters and the Yampah Vapor Cave, a natural steam room where hot spring water trickles ...

They named the cave Atmos. Pushing further ... holds about 8,335 cubic meters of thermal mineral water. For comparison, an Olympic-size swimming pool holds 2,500 cubic meters.

The caves may seem prehistoric, but the hotel is decidedly modern, offering in-room hydrotherapy spa treatments using mountain-filtered mineral ... cave suite—though Turkish baths, an outdoor ...

The contrast between the warm, mineral-rich waters and ... Spa & Lodgings has an outdoor pool, spa, small stone-lined private soaking tub and vapor cave, plus cabin lodging. Two local lodging ...

With high carbon dioxide, low oxygen and no photosynthesis, here’s how an entire ecosystem persists in Movile Cave, one of the most extreme environments on Earth.