说明

12/27/2014 There is a large, deep hole in the Wissahickon Bike Trail, about 2000' upstream from the Ridge Avenue trailhead. The bank washed out, leaving the hole.

It has been there for over a year, and has been temporarily marked by yellow tape and spray paint.

Other reported but still open problems nearby on the Wissy Bikeway include:
http://seeclickfix.com/issues/951783
http://seeclickfix.com/issues/1105582
http://seeclickfix.com/issues/1417796