The Catskill Escarpment, often referred to locally as just the Escarpment or the Great Wall of Manitou, and known as the Catskill Front to geologists, is the range forming the northeastern corner of the Catskill Mountains in Greene and Ulster counties in the U.S. state of New York. It rises very abruptly from the Hudson Valley to summits above 3,000 feet (910 m) in elevation, including three of the Catskill High Peaks, with almost no foothills. The plateau to the south and west averages 2,000 feet (610 m) above sea level.