Stone Gap routes?

The path(s) from Stone Creek Rd through Stone Gap seems pretty indeterminate. It seems likely one route is under the existing road through the gap into Penn Roosevelt park. But examination in the SW corner of the gap shows clear RoW headed along the stream into the gap. Then it disappears 🙁 It’s unclear whether it has been wiped by flooding or whether it never continued into the gap. Was this a deadend spur, or was there actually a very big wye formed by two tracks through the gap?