The 1,130 acres of Caledonia State Park are located in Adams and Franklin Counties midway between Chambersburg and Gettysburg on U.S. Route 30. Geographically, Caledonia is located on the Blue Ridge known locally as the South Mountain. The Blue Ridge separates the great valley to the west from the piedmont province in the east. Geologically, the mountains are quartzite with limestone found in the valleys.
Soil here is ideal for fruit production and many orchards are found in the surrounding area.
A total of 185 tent and trailer sites are available in two campgrounds. The camping season opens the second Friday in April and ends after the antlerless deer season in late December. The campground provides flush toilets, hot showers and a sanitary dump station. A group tenting area with a capacity of 100 persons is available to qualified organized adult and youth groups. The area is from the 2nd Friday in April to the 3rd Sunday in October.