We wanted to stay overnight in YNP in late October and found out that most of the hotels were already closed and the only campgrounds open were Mammoth, which is open year-round and Lewis Lake, which was open until 11/4. We had no trouble finding a spot in the late afternoon but because it was the only camping available , and it is YNP, it filled up fast! Nice but tiny sites, pretty trees and a separate area for tenters . This campground was very quiet. It was also very clean considering it had hard use all summer. Every site has a little tent pad, a table, and a fire pit. The rangers had turned off the water so there was no fee either! The boat ramp at Lewis Lake was perfect and the lake was glassy so we had excellent canoeing. This review is heavily determined by the time of year, and the excellent weather we enjoyed. But it gives a different twist to camping in Yellowstone.

Lewis Lake is hands down my favorite campground in Yellowstone National Park. For reasons I don't understand, most people avoid this campground, but it is the coolest in the summer, has a very nice lake next to it, and is a short drive to most of the attractions in the Southern half of the park. It is NOT suited to any RV over 25 foot.

Explored Yellowstone for 5 days it's hard not to camp in the park it's so huge. On Lewis lake great if you have a boat. But 35$ for a tent site. Rediculous. Rangers were super friendly. It was elk rutting season and a couple people got to close not their car….gapers typical. Yellowstone is one of my favorite is parks for sure.

The best campground in Yellowstone - quiet and beautiful!

This was a beautiful, quite, and secluded campground on the south edge of Yellowstone. It is a perfect base camp if you have already seen the north side of the park and are looking for someplace to stay while you explore the south side. The sites were clean and well kept and the bathrooms in fair condition. This was my favorite out of the 3 campgrounds we stayed in at YNP mainly because of how much quieter it was than the other spots we were at. I would definitely recommend Lewis Lake for anyone looking to explore the south side of the park.