At the southern end of Dovedale, at grid reference between the villages of Thorpe and Ilam, stands Thorpe Cloud, , an isolated limestone hill known as a reef knoll. It provides a viewpoint north up the dale and south across the Midlands plain. Its name cloud is a derivation of the Old English word clud which means hill. On the opposite bank, at grid reference , is the higher but less isolated Bunster Hill, , which is also a reef knoll. They were acquired by the National Trust in 1934 for the South Peak Estate.