The option up the gap was likely the 'better choice' of an ascending route for ox cart and wagon (such as those made downstream in Conestoga, Pennsylvania) encumbered white settlers pouring west across the Alleghenies escarpment.
It is located in Logan Township, Blair County, Pennsylvania just west of Altoona, PA, overlooking the former Pennsylvania Railroad trackage beginning to climb up alongside Glen White Run to the hard hairpin turn that begins at the confluence with the Kittanning Run before its famous traverse bends around in the famous Horseshoe Curve approximately 5 mi (8 km) west of Altoona.
However, topographical analysis shows the climb up from the Altoona Plateau up to the Allegheny Plateau through Kittanning Gap would bend first northerly then curve gradually climbing along several diverse hill sides as to path hooked back to resume a westward heading in the valley of Clearfield Creek coming out in the vicinity of Ashville, Pennsylvania but about a half-mile distant and on the opposite side of the summit that sources the Kittanning Run.
In the 18th century the Kittanning Path passed through the gap, providing a route between central and western Pennsylvania for Native Americans and early white settlers.
The Kittanning Path lower valley was later selected as the climbing approach for the 1845 railroad line chartered (ordered, in effect) to cross the Allegheny Mountains.