Ghost Town is a 36 mile trail that runs from Blacklick to Ebensburg, PA. It runs along the former Ebensburg & Blacklick Railroad right of way. The trail passes old iron furnaces and abandoned towns, hence the name. I have only ridden a portion of the trail but I hope to return in the future to ride the entire trail. More information about the trail may be found at the Indiana County Parks website.
The Ghost Town Trail is also the #4 trail of the top 10 trails in Pennsylvania according to the rails-to-trails conservancy.