Greenstone Falls is located within the Porcupine Mountains Wilderness State Park in Michigan’s Ontonagon County on Little Carp River. There is trail that runs along either side of the river and can be crossed by several different narrow planked boardwalks. Greenstone Falls Cabin is close by and can be rented out to stay in. Greenstone Falls can be access from Little Carp River Trail at the Little Carp River Road trailhead off South Boundary Road. This section of trail is a distance of 2 miles (3.36 km) out and back to get to the falls.