Pumice Flat Campground is a small 17-site campground at 7,700' elevation in the Mammoth Lakes region, accessible only via a narrow, single-lane road during summer months.

The campground offers potable water, restrooms, picnic tables, and bear-proof lockers at each site ($32/night), making it suitable for anglers and outdoor enthusiasts accessing the Middle Fork San Joaquin River area.

Note that the site is currently closed and requires an amenity fee to drive through Reds Meadow Valley to access it.