Not to be confused with Eildon Hill, ScotlandEldon Hill is situated in the Peak District National Park in the county of Derbyshire, England four kilometres southwest of the village of Castleton. It is a grass-covered limestone hill which reaches a height of 470 metres (1542 feet). It is primarily pastureland and is used for rough grazing, although a large proportion of the hill has been lost to limestone quarrying. It lies within the Castleton Site of Special Scientific Interest.