The castle of Clitheroe stands on a lofty motte of natural rock.[365] There are no earthworks on the summit, but a stout wall of limestone rubble without buttresses encloses a small court, on whose south-west side stands the keep. It is just possible that the outer wall may be the original work of Roger, as limestone rubble would be easier to get than earth on this rocky hill. The keep is small, rudely built of rubble, and has neither fireplace nor garde-robe, nor the slightest ornamental detail--not even a string course. But in spite of the entire absence of ornament, a decorative effect has been sought and obtained by making the quoins, voussoirs, and lintels of a dressed yellow sandstone. The care with which this has been done is inconsistent with the haste with which Roger must inevitably have constructed his first fortification, if we suppose, as is probable, that he received the first grant of his northern lands on William's return in 1070 from his third visit to the north, when he made that remarkable march through Lancashire to Chester which is described by Ordericus. It seems more likely that even if the outer wall or shell were the work of Roger, he had only wooden buildings inside its circuit. Dugdale attributes the building of the keep to the second Robert de Lacy, between 1187 and 1194, and it is probable that this date is correct.[366] The bailey of Clitheroe lay considerably below the keep, and is now overbuilt with a modern house, offices, and garden. It covers one acre. A Roman road up the valley of the Ribble passes near the foot of the rock.[367] As the very name of Clitheroe is not mentioned in Domesday Book, it clearly was not an important centre in Saxon times. The value of Blackburn Hundred, in which Clitheroe is situated, had fallen between the Confessor's time and the time when Roger received it. It is quite possible that he never lived at Clitheroe, as he sub-infeoffed the manor and Hundred of Blackburn to Roger de Busli and Albert Greslet before 1086.[368]