Mammoth Campground — Yellowstone National Park
Reviewed Jun. 18, 2019

Close to Gardnier, MT yet inside the National Park

The campground itself is very well maintained and clean with water spouts everywhere, garbage dumps, and (clean) flushing toilets. All pull thru sites which are very spacious. No reservations so keep that in mind, just get here early and you should haven't a problem getting in 😁.