Campsite #21 at Mammoth Hot Springs Campground, Yellowstone National Park, WY

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$25

Campsite #21

4 reviews
Drive-In 6 people
50 ft Pull-through
1 fair
21
9/1
Campsite #21 Features: Drive-In access, Pull-through parking, 50ft driveway, Fire ring w/ Grill, Food Storage Locker, Picnic Table, RV Site, Tent Site, Trailer Site, Pets Allowed

Campsite Reviews (3)

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@nancyt2937347 · Camped on Aug 14, 2025 at Campsite #21
Mammoth Campground was a great location for our Yellowstone visit. Starting about 7 am took us to the Old Faithful area with no traffic slowdowns (and with a mama black bear and her cub ambling across the road just for us). Going toward the NE entrance through the Lammar Valley brought tons of buffalo, close but a comfortable distance away--babies nursing, bulls pawing and bellowing to win cows. It was a great location, and just 5 miles from restaurants in Gardiner when we wanted dinner out.
@DavidM1864120 · Camped on Jul 28, 2025 at Campsite #21
it was great campsite, the facilities were good and well maintained. The camp hosts were very helpful and pointing out good spots to hike and find animals.
@SandraK7607647 · Camped on Jun 9, 2022 at Campsite #21
Great location — loved the smallness of the campground— camphosts were excellent!

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