Over time, erosion eventually exposed the present mountain of more resistant igneous rock.
This intrusion of granite also gave rise to Panola Mountain and Arabia Mountain, both in De Kalb County, smaller outcroppings farther south of Stone Mountain.
Through the process of cryptobiosis, the tiny shrimp eggs (or cysts) can remain dormant for years in the dried out depressions, awaiting favorable conditions. The rare Georgia oak was first discovered at the summit, and several specimens can easily be found along the walk-up trail and in the woods around the base of the mountain.
In the fall, the extremely rare Confederate yellow daisy (Helianthus porteri) flowers appear on the mountain, growing in rock crevices and in the large wooded areas.
The granite intruded into the metamorphic rocks of the Piedmont region during the last stages of the Alleghenian Orogeny, which was the time when North America and North Africa collided.a charter member of the United Daughters of the Confederacy (UDC).The Venable Brothers, owners of the mountain, deeded the north face of the mountain to the UDC in 1916.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.Stone Mountain is a pluton, a type of igneous intrusion.As part of their ceremony, they burned a crude cross.The influence of the UDC continued, in support of Mrs.The largest bas-relief sculpture in the world, the Confederate Memorial Carving depicts three Confederate leaders of the Civil War: President Jefferson Davis and Generals Robert E. "Stonewall" Jackson (and their favorite horses, "Blackjack", "Traveller", and "Little Sorrel", respectively).The entire carved surface measures 1.57 acres (6,400 m).The clear freshwater pools on the summit form by rainwater gathering in eroded depressions, and are home to unusual clam shrimp and fairy shrimp.The tiny shrimp appear only during the rainy season.