However, building a motte was a skilled achievement.
Built on a hilltop late in the 11th century, the castle started life as a large motte castle.
The motte consists of a central grass covered mound with an encircling ditch and bank, bailey and outer rampart.
They differ from motte and bailey castles because they do not have a motte.
In these castles, there was a fortified building (the castle) on top of a man-made hill called a motte.