Flatrock Campground offers 17-38 campsites (depending on loop configuration) at 6,400 feet elevation along the Henry's Fork of the Snake River, with direct river access ideal for fly-fishing and floating.

The campground features electric hookups at select sites, vault toilets, potable water, and gravel roads accommodating RVs up to 45-65 feet, though Highway 20 proximity creates notable road noise.

Located just 1/4 mile south of Macks Inn (which offers boat rentals and shuttle services), it serves as a convenient basecamp for the Big Springs National Recreation Water Trail and nearby fishing opportunities, with reservations available up to 6 months in advance ($25-$62/night).