This photograph was taken in August 1861 from a sentry box just down slope from here. The photographer was A.J. Riddle, who was preparing a report for the Confederate government.
Riddle's seven glass-plate negatives apparently were the only photographs taken of Andersonville prison during the war. Like a double exposure, the surviving photos superimpose the historic reality on today's pastoral scene. You are looking at the same piece of ground Riddle photographed.
The photograph shows the deadline, a camp road (North or Market Street), and the crowded shebangs. Shelters were more scattered in the swampy area near the creek.
National Park Service
Plaque courtesy Lat34North.com.
Original page, with additional info, here.
Photo credit: Ken Moser.