The Yampah Spa Vapor Caves are natural underground hot mineral water steam baths located in the historic hot springs mountain retreat of Glenwood Springs, Colorado. Hot mineral waters flow through the cave floors to create the natural geothermal steam baths. The experience of entering the Yampah Spa Vapor Caves is as magical as the results they produce. Visitors descend a dimly lit stairway and pass through a stone corridor, where they will make their way to three adjoining underground rock chambers. For a break from the heat, guests can douse themselves under cold-water spigots, retreat to the Serenity Room or take in the fresh Glenwood Springs air on the outdoor deck.