Fourth Iron Campground is a primitive walk-in tent site located where the Sawyer and Saco Rivers meet in White Mountain National Forest, offering 8 dispersed campsites just 0. 1 miles from the parking area on Route 302.

The campground provides excellent river access with multiple rocky beaches for swimming and wading, though campers must bring their own drinking water and be prepared for self-sufficient camping with vault toilets and no hookups.

Sites operate first-come, first-served at $15/night year-round, with bear boxes provided and nearby hiking trails accessible from the location.