This federal campground at Devil Track Lake features:
16 sites, picnic tables, fishing, fire grates, toilets, are first come-first served, drinking water, are RV accessible (limited length, no hook-ups, though) and fee charged. A swimming beach, carry down boat access, a picnic site, berry picking and a boat launch a 1/2 mile east. Details here.
From Hwy 61, north 4 miles on Gunflint Trail (Co. Rd. 12), west 8.4 miles on Co. Rd. 8, left into campground on Forest Rd 1612.