>>2138851northern maryland in the west or east? I certainly have ideas but depends which county you are in.
Assuming you mean east, I just went to gilpins falls. Make sure you DONT cross the covered bridge (or if you do circle back) to connect with the trail. Don't make the same mistake I did and be stuck following the penstock green pipe thing.
The trail is right next to the parking area slightly south of the creek.
It is marked on Google maps as gilpins covered bridge.