There are some good riding loops there, and some easy boring riding too.. The orange loop to the east of the river is good (great downhills and tech sections), but there is a pretty long "hike a bike" section along the river. Maybe you can cross the river and get trails on the other side. The blue trail is good too. The orange trail on the west side of the river starts out with a nice technical climb up a wet stream bed.
Rte 2 - Rte 11 south to end, right turn follow signs for Devils Hopyard...
http://www.singletracks.com/item.php?c=1&i=5933