It was built, in the late 11th or early 12th century, of earth with timber palisades for defense and a one or two story wooden dwelling.

Around the crest of its summit was placed a timber palisade, a tower, possibly residential.

In the final stages the timber palisade was reinforced with a heavy stone wall around the timber.

Its timber palisade looked strong from afar, but had not proved strong enough.

A timber palisade with a gate closed the fourth side.

They built a large "playing-card" shaped fort with initially a timber palisade which was later replaced in stone.

Torches were put to the timber palisades, gates were burst open.

I remember when I believed the fort with its timber palisade was the entire world.

Thomas de Londres replaced a timber palisade with a stone wall in around 1200.

The timber palisade surrounding the site was replaced with a stone curtain wall.