Do you know where you were? I do.
Camping along the Appalachian Trail, at the old October Mountain Leanto.
I hiked about 7 miles in the rain, got lost a view times and tried to dry out in the leanto.
See the location at https://ngmdb.usgs.gov/topoview/viewer/#14/42.3599/-73.1581
The new shelter has been relocated further south.