forbidden drive (wissahickon VALLEY park)
This path is 7 miles with crushed gravel underfoot. The Forbidden Trail runs along the Wissahickon Creek in Wissahickon Valley Park. This trail runs the length of Wissahickon Valley Park with tons of great views and the ability to turn off into several singletrack trails. There are bathrooms halfway next to the Valley Green Inn. 1 Valley Green Road, Philadelphia, PA 19128.