[post_page_title]Closing the portcullis[/post_page_title]
This is one of the most well-known defense systems that was implemented by castle designers. A crisscross portcullis was often used as a castle gate, and it would typically be made out of a durable material such as iron or timber.
The lowering and raising of such a gate involved a number of different pulleys and winches, making one all-but-impossible to lift on one’s own. Castles would also sometimes include more than one of them to trap potential attackers inside.
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