Nightwing, Vol. 2 #69A

Bruce Wayne: Fugitive - Part Nine: Ins & Outs
The pieces are coming together indicating that somehow, someone infiltrated the Batcave. But how? The earthquake that did so much damage to Gotham may have left countless undetected entries. But a suggestion from Alfred with a twist courtesy of Robin may be just the trick to finding them. Locating a likely entrance underneath a disued Dairy Barn on the property, Nightwing attempts to duplicate the intruder's path to see if it's possible that someone could have reached the Batcave.
Release Date: 2002