Plattekill Mountain is a peak in New York's Catskill Mountains in Greene County, lying south of Platte Clove and near Indian Head Mountain to the west-northwest. It forms part of the region's rugged terrain of deep notches and neighboring summits. Its significance here rests chiefly in its geographic setting within the Catskills and its relationship to nearby landmarks, especially Platte Clove. Beyond its location and proximity to Indian Head Mountain, little additional detail is established.