Stone Mountain is a large quartz dome in Stone Mountain, Georgia. At its summit, the elevation is 1,686 feet and it is 825 feet above the surrounding area. Stone Mountain granite extends underground 9 miles at its longest point. Stone Mountain Park offers a wide variety of activities for the whole family, such as a night time laser shows with fireworks, hiking trails, and a train ride that takes you around the mountain. This park combines city attractions in a natural environment.