 The northern / western end was in Old Lycoming Township just north of what is now the city of Williamsport in Lycoming County.Culbertson's Path followed White Deer Hole Creek west from Allenwood, then left to follow Spring Creek north, crossing North White Deer Ridge and Bald Eagle Mountain and following Mosquito Run to the West Branch Susquehanna River at the modern borough of Duboistown.Here it forded the river at Culbertson's Ripples (approximately the modern location of the Arch Street Bridge).