Stone keeps are built on top of a hill to get the vantage point.
stone
The stone keeps supported to look after all the movement around the castle and it protected everyone who lived there
In Egypt:)
1078
Normans
To make them stronger and stone is a very strong material
1872.
The Athenians
the key feature of a square keep are the turrets stone wall
all over England on hills
Stone keeps
They are about two meters thick.