In August 2011, the Mammoth Hotel Dining Room became certified by the Green Restaurant Association. The GRA is a national non-profit organization that provides a cost-effective way for restaurants to demonstrate their commitment to environmental sustainability. The Mammoth Dining Room is Xanterra’s first certified green restaurant, and with a 4-Star rating (out of a possible 4-Stars), is the FIRST 4-Star certified restaurant in Wyoming and our National Park System, and one of only 25 in the country. To achieve certification, restaurants must address critical areas that include: Energy, Food, Water, Waste, Disposables, Chemicals and Pollution Reduction, and Furnishings and Building Materials. To achieve its 4-Star certification, the Dining Room demonstrated sustainable operations through a major restroom remodel, installation of energy-saving LED lamps and water-saving fixtures, sourcing of local and organic cuisine, recycling and composting restaurant waste, and using environmentally preferable cleaning products.
Please be advised, dining dates, hours, and menu options may be limited and can change with little to no notice.
Opens: April 25, 2025
Closes: March 2, 2026*
* Mammoth Hotel Dining Room will be open in the fall of 2025 between the summer and winter seasons.
First-come, first-served in the summer.
Casual
Mammoth Hotel Dining Room, 305A Albright Ave, Yellowstone National Park, WY 82190