This allegedly happened between Buladean and Erwin, TN. That is about as close to the AT as you can get. 10-K, have your camera ready at all times.

http://www.bfro.net/gdb/show_report.asp?id=37267

This substantiates my point that the Searching for Big Foot guys need to go out in the daytime. A large percentage of sightings happen in daylight. What was interesting to me is that the Big Foot made the knocking sounds with his hands. I always assumed they picked up a stick and rapped the tree.