The Howardian Hills are an Area of Outstanding Natural Beauty located between the Yorkshire Wolds, the North York Moors National Park and the Vale of York, they take their name from the Howard family who still own local lands.The Howardian Hills form 79 square miles of well-wooded undulating countryside between the flat agricultural Vales of Pickering and York. The irregular 558 feet (170 m) high ridges of the Howardian Hills are a southern extension of the rocks of the Hambleton Hills in the North York Moors. Jurassic limestone and a network of pasture, extensive woodland, trees and woodland combine to create a strong visual character in the higher ground overlooking the agricultural plains below. On the eastern edge, the River Derwent cuts through the Hills in the Kirkham Gorge, a deep winding valley formed as an overflow channel from glacial Lake Pickering