The railroad utilizes what was originally an
industrial spur built in 1869 by the Stone Mountain Granite Company to serve quarries at the foot of the
Stone Mountain, with a connection to the
Georgia Railroad's main line in
Stone Mountain Village. The railroad later started an excursion service to the mountain. The spur was later abandoned, leaving the right of way in place (with the rails removed). In 1960, Stone Mountain Scenic Railroad, Inc. was formed to construct a tourist railroad encircling the mountain, operating it under lease from the Stone Mountain Memorial Association (a state-operated association established in 1958 for developing and managing the mountain as a park). Between 1961 and 1963, two miles of former quarry trackage were rebuilt, followed by construction of additional new trackage to complete the road around the perimeter of the mountain. The mileage of the circuit around the mountain is advertised as being long, however, the actual mileage is . The Stone Mountain Memorial Association assumed full operation of the railroad in 1981. As the steam locomotives came in need of major repairs, the road opted to withdraw them and operate diesels. In 1987, the spur connecting the mountain trackage to the
CSX main line was restored, and the railroad hosted several visiting trains, including Savannah and Atlanta Railway steam locomotive number 750. In January 1998, the Memorial Association leased operations of the railroad and the other attractions within the park to
Herschend Family Entertainment, operators of the
Silver Dollar City theme park in
Branson, Missouri and the
Dollywood theme park in
Pigeon Forge, Tennessee. In 2004, the trackage connecting the railroad to the main line was dismantled and the spur truncated to just before the bridge spanning Robert E. Lee Boulevard within the park's premises. The trackage and decking were removed, though the bridge's girders remain, and the right of way to the west of the bridge was converted to a pedestrian trail, while the railroad continues to use the remaining track to reverse the train's direction. In 2011, major upgrades of the track, passenger cars, and diesel locomotives were performed. The diesel locomotives received new motors and other upgrades, as well as a new paint scheme. The steam locomotives received some cosmetic restoration at this time as well. The railroad had de-accessioned its last remaining steam locomotives in early 2013, and currently owns and operates diesels exclusively. ==Locomotives==