Fourth Iron Campground offers 8 primitive walk-in tent sites located at the confluence of the Saco and Sawyer Rivers, featuring excellent river access for swimming and wading along multiple rocky beaches.

Sites include bear boxes, fire rings, vault toilets, and picnic tables, but require campers to bring their own water and carry gear approximately 0. 1 miles from the parking area off Route 302.

Operating first-come, first-served year-round for $15/night, the campground is accessible 4 miles west of Bartlett, NH, though visitors must cross active railroad tracks to reach the sites.