Take Hwy 78 South to Mountain industrial. Go right until East Ponce de Leon. Take Left. This will take you to the entrance of Stone Mountain Park.
The cost to get into the park now is $10.00 for the day or $35 for a year pass. The specific name of the trail is labeled as the 'Cherokee Trail' in Stone Mountain Park.
Sweet Single track, very technical sections, with some nice climbs.