Lets try this map link
Central PA Near Roxbury, PA
Find Route 641 off of exit 201 (Blue Mountain) of the PA turnpike (take 997 south from turnpike or north from Shippensburg/I-81).
Route 641 heads west from Roxbury (which is north of Shippensburg and the letterkeney army depot).
There is a point where the road splits into a truck route and a regular route.
The truck route is the road you want (it branches off to the right) (I believe the name is Cold Spring Road on the map)
This is probably 3 miles of constant twists and raises and drops through a mountain gap. Once out of that road, it continues back for another 3 miles through a valley and by houses that is also good for gathering up some speed and hitting some unexpected turns!
It is a blast to run it! Definitely takes some skills and keeping the engine near boost when you quickly run out of one corner and into another!