fester hollow begins in northeastern north centre township, on the southern side of knob mountain. the stream flows southeast until it reaches pennsylvania route 93, which it crosses. it then turns south-southeast and flows parallel to pennsylvania route 93 for a short distance, passing by a cemetery. when pennsylvania route 93 curves east, fester hollow continues going south-southeast. it then passes by the community of fowlersville and then enters west branch briar creek.