Part of the Yampah Spa & Salon, the Hot Springs Vapor Caves are a series of three natural underground, geothermal steam baths. Mineral-filled water from a natural hot spring runs about 125°F under the floors of the only known natural vapor caves in North America, creating steam temperatures of 110–112°F within the rock chambers, where there are marble benches for you to sit on while you inhale the steam. Each chamber is successively hotter than the last, but you
can take a break in an adjacent cooling room or the upstairs solarium when you need it. A variety of spa treatments is also available, including massages, body wraps, and private mineral baths.