Iron Mountain Hot Springs | Glenwood Springs, Colorado The Iron Mountain Hot Springs caters to all who appreciate relaxing with a warm soak surrounded by mountain views. Glenwood Spring's newest hot spot offers 16 NATURAL mineral hot springs soaking pools and a freshwater family pool with a jetted spa. All are located alongside the Colorado River, just across from the base of the tram at Glenwood Caverns Adventure Park, with Rocky Mountain views that soothe and inspire.