What a Gem hidden near Philadelphia. The refuge is about 15 min drive from the Campus RV Park and Ride lot and offers alot of great hiking, birding and biking.
There is ample parking and the Visitor Center is brand new ( so new its empty ).
If you are in Philadelphia and want to get out in nature we can only recommend it. We too a 4 1/2 miles hike around the lake and saw egrets, watched herons fly over and land next to us, water snakes swim away and turtles hiding in the gras hissing at us.