Glacial Lake Schoharie and Vroman’s Island
You should first read our other post below
When you look south, down the Schoharie Creek Valley from the top of Vroman’s Nose, you will see a broad and very flat valley floor. In the Catskills this sort of thing is almost always the bottom of a glacial lake. That is the case here. About 14,000 years ago a valley glacier filled the valley from Middleburgh to the north. That dammed the north flowing Schoharie Creek.
See our second photo. It shows the glacier and Glacial Lake Schoharie. The waters of Lake Schoharie reached up almost to the top of Vroman’s Nose. That made it, for a time, Vroman’s Island! Most lakes have to have a place where they drain. In this case the waters drained off through the village of Franklinton. That’s on the far right lower corner of our map. Eventually the glacier melted away and Lake Schoharie drained to leave a dry valley floor, flat like the old lake bottom.