The keep is in the Decorated style, and appears to have been built in the reign of Edward II. Below the ground is a vaulted dungeon, dark and horrible in its hopeless strength, which is only emphasized by the tiny air-hole that lets in scarcely a glimmering of light, but reveals a thickness of 15 feet of masonry that must have made a prisoner’s heart sick. It is generally understood that Bolingbroke spared Richard II. such confinement as this, and that when he was a prisoner in the keep he occupied the large room on the floor above the kitchen. It is now a mere platform, with the walls running up on two sides only. The kitchen (sometimes called the guard-room) has a perfectly preserved roof of heavy groining, supported by two pillars, and it contains a collection of interesting objects, rather difficult to see, owing to the poor light that the windows allow. The small local guide-book gives us a thrill by stating that a very antique-looking chest is ‘said to have been the property of William the Conqueror.’ We hope it was, but long for some proofs. The spring mantrap is of no great age, and it was in use not many years ago, when the owner was in the habit of exhibiting it on market days with a notice upon it to inform the public that every night he adjusted its deadly jaws in some part of his orchard. There is much to interest us among the wind-swept ruins and the views into the wooded depths of the Nidd, and we would rather stay here and trace back the history of the castle and town to the days of that Norman Serlo de Burgh, who is the first mentioned in its annals, than go down to the tripper-worn Dropping Well and the Mother Shipton Inn.