There are two geothermal wells which supply approximately 45,640,000 gallons per year. In addition to these manmade wells there are numerous "hot springs" that emerge from the ground cavities. Over the years, these "hot springs" provided therapeutic treatments for guests, including hot mud baths and steam rooms in manmade "steam caves". The geothermal wells provide, even today, hot water for domestic and hotel use as well as heating of the swimming pool and thermal wading pools. It is said that the geothermal springs at Arrowhead Springs Resort are the hottest in the world at 202 degrees Fahrenheit, with Baden Baden and Karlsruhe spas in Europe coming in second and third place.