it is the center of the castle and where it knight/lord is
bob made it!
Square keep castles (or stone keep castles) were made out of stone; you can probably tell from the name! Hope this helps.
They used stone tablets.
A stone or square keep castle is the extention of a motte and bailey castle.
This is because the keep itself is made out of Stone. they were built in medieval times.
Stone keep castles were used as fortified residences for nobility, providing both a defensible stronghold and a symbol of power and status. They served as centers of governance, offering protection for the ruling elite and their belongings during times of conflict. Additionally, they were used as a display of authority over the surrounding land and population.
Stone.
stone
stone
stone and wood
because the square stone keep was not good enough to handle retakes
centrifugal force