Ithaca Falls is a waterfall located within the city of Ithaca, New York. It is the last of a series of waterfalls along the hanging valley formed where Fall Creek intersects the glacial trough of Cayuga Lake. The falls are in an amphitheater formed by freezing and thawing of the weak shale which makes up most of the gorge walls. The splash pool, and the creek just below the falls, are a popular spot for fly fishing.