Tompkins Campground is on the PA side of the NY/PA state line just south of Corning.  Arriving at the campground from Corning is rather interesting.  There is road construction, county roads, and more county roads.  Once you follow the sign to the campground you wonder if you’ve accidentally turned onto the wrong road as you are on a narrow patched bit of barely-over-one-lane blacktop.  After a short distance you cross into PA and the road improves considerably as you pass under Hwy 15.  Then it deteriorates a bit as you travel the final miles to the campground.

Here’s a later, 2019 review of this campground.

There are playgrounds, horseshoe pits, a laundry, and, for the boaters a nice dock.  The Corning Museum of Glass, Watkins Glen State Park (with wonderful waterfalls), and the scenic “Grand Canyon of Pennsylvania” are all reasonably close by.

There’s no park WiFi and my Verizon cell hot spot barely works (and that’s with a Wilson Sleek signal booster).

If you are looking for a nice, quiet camp spot look no farther, this is it!