One of the least appealing campgrounds in Yellowstone NP
Broadcast News: One needs advance reservations as of this year to camp in Yellowstone.
This campground is less appealing than most of the others in the park; however, it is open all year and is close to the North entrance and the town of Gardiner. A plus is that it is also on the doorstep of the Mammoth area and therefore you have easy access to the information at the visitor Center there and the new coffee bar at the hotel.
Month of VisitMay