Located on the north side of Emory's campus. This site has about 2 miles of trails and some paved roads (no cars allowed).
Thanks to Brian Brodrick for bring this park to our attention.
Directions: Take Ponce de Leon toward Decatur. Turn left onto Clifton (it's where you'd turn to go to the Fernbank Museum). Clifton twists and turns so be careful. Follow Clifton for almost 2 miles. Lullwater Park will be on your right just after you cross over the bridge that goes over the railroad tracks.
Brian notes that the park is adjacent to the Yerkes Center and across the tracks from North Druid Hill High School.