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 New York. It rises very abruptly from the Hudson Valley to summits above 3,000 feet in elevation, including three of the Catskill High Peaks, with almost no foothills.