Graysmom reminded me when she mentioned the Lehigh Gorge...you can also go Whitewater Rafting in Jim Thorpe. There is also an outdoor paintball place up there. Jim Thorpe is only about 20-30 minutes from Dorney Park, so you can easily drive up there for a day.
http://www.whitewaterrafting.com/
http://www.whitewaterrafting.com/


