 Its slopes are spread out and rise gently for some distance, then a bit more steeply, to the summit dome, which is surrounded by rock cliffs at about 3,500 feet (1,067 m) in elevation.Above them the ground again curves gently upward to the summit, roughly at the dome's center.Drainage from the north flows into Kaaterskill Creek, from the south to Plattekill Creek, both of which reach the Hudson River shortly afterwards without any major impoundment.