I was under the impression that the glaciers leveled the land they covered. The hills/rivers/cliffs were already there complements of multitudes of years of erosion. They're still there if not glaciated. Glacier melt would possibly add erosion potential where run-off was present in a large enough volume. Often meltwater would form massive lakes behind end moraines that later time would erode and release torrents of massive water flow influencing some topographical features.
At any rate, great pictures. If ever in that part of Ohio, I would sidetrip to vist that area.
