MAMMOTH HOT SPRINGS, Wyo. — Yellowstone National Park’s Mammoth Hot Springs Hotel will remain closed this winter season, December through March 2023.
The hotel closed immediately after the historic June floods because of the area’s wastewater system. The hotel gift shop, coffee and beverage service, lobby and ski shop will be open. Regularly scheduled tours and snowcoach service between Mammoth Hot Springs, Old Faithful and other iconic locations will be available.
Following June’s floods, a sewer line adjacent to the road that carried wastewater from Mammoth Hot Springs to a sewage treatment plant in Gardiner was ruptured. Staff quickly rerouted the wastewater into percolator ponds used between the 1930s and 1960s, allowing for summer day-use visitors and residents to stay in the area. Currently, a new wastewater treatment system is being built to serve the Mammoth area, however, the temporary system is not ready to support hotel operations this winter.
Yellowstone staff are working to make this system operational and anticipate the hotel to reopen in spring 2023.
