Stone Mountain is the centerpiece of Stone Mountain State Park. It is a dome of exposed granite (specifically a quartz diorite to granodiorite) of Devonian age, which has intruded into the gneiss of the Precambrian Alligator Back Formation.[1] It rises sharply over 600 feet (183 m) above the surrounding terrain. The mountain, which has an elevation of 2,305 feet (706 m) above sea level, is known for its barren sides and distinctive brown-gray color, and can be seen for miles. The mountain offers some of the best rock climbing in North Carolina, and the park's creeks and streams feature excellent brook trout fishing.

Stone Mountain
Stone Mountain view from the park falls.
Highest point
Elevation	2,305 ft (703 m)
Prominence	600 ft (180 m)
Geography
Location	Alleghany / Wilkes counties, North Carolina, U.S.
Parent range	Blue Ridge Mountains
Climbing
Easiest route	Hike or rock climb
U.S. National Natural Landmark
Designated	1974

Because the mountain is the best example of a monadnock in massive granite in North Carolina it was designated a National Natural Landmark in May 1974.[2]

References

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[it] Stone Mountain (Carolina del Nord)