Stone Mountain is a quartz monzonite dome monadnock and the site of Stone Mountain Park in Stone Mountain, Georgia. At its summit, the elevation is MSL and above the surrounding area. Stone Mountain is well-known not only for its geology, but also for the enormous rock relief on its north face, the largest bas-relief in the world. The carving depicts three Confederate figures during the Civil War: Jefferson Davis, Robert E. Lee and Stonewall Jackson.Stone Mountain was once owned by the Venable Brothers and was the site of the founding of the second Ku Klux Klan in 1915. It was purchased by the State of Georgia in 1958.Stone Mountain is more than 5miles in circumference at its base. The summit of the mountain can be reached by a walk-up trail on the west side of the mountain or by the Skyride aerial tram.GeologyStone Mountain is a pluton, a type of igneous intrusion. Primarily composed of quartz monzonite, the dome of Stone Mountain was formed during the formation of the Blue Ridge Mountains around 300–350 million years ago (during the Carboniferous period), part of the Appalachian Mountains. It formed as a result of the upwelling of magma from within the Earth's crust. This magma solidified to form granite within the crust five to ten miles below the surface.
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