Nope, you would know it as the overlook climb since it has a sign that sez Overlook at the light you make a turn on. I don't know what route you guys did so its hard to tell where you were but most of those rides go through the old town of Vinings (near the Home depot). We normally start in midtown and do the P-tree battle/Buckhead bellyache ride and those rides go towards Vinings... I've seen 50mph on some of those downhills so be careful.

Trish's site is a good one to get a feel for what's going on around town. She also has some links to the group rides on the sidebar. Southeastern cycling

Ride on,
-Scott