To pasusan - thank you for posting the picture of the PA Grand Canyon, otherwise known as Pine Creek Gorge. Granted, not on the scale of the Arizona Grand Canyon but still impressive in its own right, especially when you remember that the Appalachian Mountains were at one time higher than the Rockies or the Alps. To those who visit us here in the Northeast - do NOT underestimate our mountain roads!! An 8 percent grade is an 8 percent grade whether it is here or in Colorado, so your due diligence is required.
To the OP - consider Canyon Country CG west of Wellsboro, PA. It is only a mile or so if you want to walk/hike to Pine Creek Gorge. Not a big place and not fancy, but they will have a site large enough for your unit. Nice people run the place. In town is the Wellsboro Diner. Excellent food (albeit diner food) at very reasonable prices. Take a side trip to Sabinsville PA and the Patterson Maple Farms. Maple syrup is in production only January through March but the product is equal to any maple syrup that comes out of New England. In addition to three kinds of syrup they also offer maple cream (for coffee) and maple mustard.