Rough as heck. Not sure anyone has played the courses in a year or two. It’s manageable but not recommended.
Object course set on the hills behind Mammoth Hot Springs Hotel. Most holes incorporate extreme elevation or length. Map and course description available in Employee Recreation Office or Bell Desk. Some par 5's are hard to follow, the object being a tree among many others. Local guide recommended.
In Yellowstone National Park, In Mammoth Hot Springs on Grand Loop Road. Park at the hotel, and walk toward the fenced in transformer facility on the hill. Hole one begins at transformer, plays to tone pole down the road.