Black Chew Head in Saddleworth in the Metropolitan Borough of Oldham is the highest point or county top of Greater Manchester in northern England. It stands on moorland on the edge of the Peak District at a height of 542 m (1,778 ft) above sea level, close to the border with the High Peak district of Derbyshire. Historically in the West Riding of Yorkshire (along with the rest of Saddleworth), it became a county top in 1974 on the creation of Greater Manchester following the Local Government Act 1972.