Yellowstone — Mammoth Hot Springs, Wyoming · elk rut
Yellowstone — Mammoth Hot Springs, Wyoming elk rut
At Mammoth Hot Springs, the fall rut plays out right on the terraced lawns of the old fort — bulls bugling among the buildings while visitors keep a wary distance. Mammoth Campground, the park's only year-round campground, is steps from one of the most accessible elk-rut shows in the country.
Rut window
Fall rut, from late August into the fall
Where
Mammoth Hot Springs, Yellowstone National Park (NPS)
Nearest RV base
Mammoth Campground (in-park, open year-round)
Watch it safely
The NPS warns every fall that bull elk are highly aggressive and attacks can be unprovoked — keep at least 25 yards back, use buildings and vehicles as buffers, and confirm Mammoth Campground's current RV length limits on the NPS page.
Confirm the season + rules with the managing agency: NPS — Yellowstone fall elk warning .