The pit privy at the Paul C. Wolfe Shelter (Virginia), July 26, 2016.

Shelter log from the Deer Lick Shelters, Pennsylvania, September 1, 2017.

Blood Mountain Shelter, May 22, 2017.

The Silers Bald Shelter, April 27, 1941. A master list of AT shelters published in the July 1939 edition of the Appalachian Trailway News describes this shelter as "authorized: plans or work being proceeded with." Thus, it was built between the summer of 1939 and the spring of 1941 when this image was taken by Albert Roth. Silers Bald Shelter is located on the North Carolina side of the Trail in the Great Smoky Mountains National Park, just south of Clingman's Dome, and is maintained by the Smoky Mountains Hiking Club.

Lakes of the Clouds Hut, built in 1915, is the highest elevation hut in the chain of shelters maintained by the Appalachian Mountain Club in the White Mountains of New Hampshire. The current structure, which has been substantially renovated several times over the years, is built on the site of an earlier shelter constructed in 1901. The hut sleeps 90, and sits at an elevation of 5,030'. Due to the often extreme weather conditions at these elevations, this hut is only open May 31-September 15 each year. Like all AMC huts, a stay at Lakes of the Clouds Hut includes dinner and breakfast (included in the fee for overnight stays).

The Blood Mountain Shelter was built in 1937 by the Civilian Conservation Corps for the Georgia State Parks system. In 1956, the shelter was transferred to the U.S. Forest Service, and is maintained by the Georgia Appalachian Trail Club, whose members carried out a major renovation of the structure in 2010 [current image]

The Mashipacong Shelter, located near the southern boundary ofHigh Point State Park (New Jersey), was built in 1936 and is one of the historic stone walled shelters that can be found along the Trail. It is maintained by the New York-New Jersey Trail Conference.

The Rutherford Shelter in New Jersey, May 27, 2005. The Rutherford Shelter was built in 1967, and is maintained by the New York-New Jersey Trail Conference. The shelter currently sports a (non-functional, for obvious reasons) satellite dish on its roof, and is a short walk from Lake Rutherford.

The George W. Outerbridge Shelter on the Appalachian Trail, June 1, 2005. The shelter is named for George Outerbridge, the second person (after Myron Avery) to hike all the sections of the Appalachian Trail. Outerbridge began his section hiking on October 30, 1932, and completed his final section on June 22, 1939.

This shelter is located on the first stretch of the Trail that Outerbridge hiked and is maintained by the Allentown Hiking Club. The Club is a member of the Keystone Trail Association and the Appalachian Trail Conservancy. The Club, founded in 1931, maintains 10.3 miles of the Trail and has two shelters -- this one, and the Allentown Hiking Club Shelter.

Allentown Hiking Club Shelter on the Appalachian Trail, June 2, 2005. The Allentown Hiking Club is a member of the Keystone Trail Association and the Appalachian Trail Conservancy. The Club, founded in 1931, maintains 10.3 miles of the Trail and has two shelters -- this one, and the G.W. Outerbridge Shelter.

Goddard Shelter on the Appalachian Trail and Long Trail in Southern Vermont, July 26, 2002.

Stratton Pond Shelter on the Appalachian Trail and Long Trail in Vermont, July 24, 2002.