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.

Is Stone Mountain an old volcano?

Just 15 miles northeast of Atlanta, a round granite formation stands 800 feet tall. Stone Mountain generates a lot of questions, but also misconceptions. One of the latter is that Stone Mountain is the remnant of an old volcano. ... Over a period of several thousand years, it cooled and solidified into granite.

Did Native Americans own Stone Mountain?

Stone Mountain is the largest exposed mass of granite in the world. It was once used by Native Americans as a ceremonial place. Today, Stone Mountain Park is owned by the state of Georgia.