Ward & Lock's descriptive and pictorial guide to the Isle of Man ...

1)0 Guide to the Ide of ]\lan.century. It seems to be probable that a Danish fort occupiedthe site, and was superseded by a stronger structure at alater time.The material used in building the castle was the extremelyhard crystalline limestone abundant in the neighbourhood,and capable of defying the wear and tear of the elementsfor many hundreds of years. The central keep, for manyyears the residence of the kings of Man, is a very massivestructure with walls twelve feet thick at the base and sevenfeet at the summit. At each angle is a tower, seventy-threefeet high, the flagstaff tower being ten feet higher. Withinthe keep were chai'