Its pretty awesome back there. There are a lot of steepb Downhills and creek crossings. There id=s ome ladder bridges. Moto xers , bmxers and paintballers also frequent the area. Just be respectful and you wont have a problem. There is a nice BMX track with some rollers and doubles. Some of which MTB friendly. There are some other scattered jumps in pits.
Its directly behind Cardinal Ohara high School on springfield rd. Its between Springfield rd. and Reed rd.
http://www.singletracks.com/item.php?c=1&i=3706