hidden

A hidden door is a door that is concealed within a wall or other structure, typically used to provide access to a secret room or passage. Hidden doors can be constructed using a variety of methods, and can be made from a variety of materials, including wood, metal, and plastic.

Hidden doors have been used for centuries, and have been featured in a variety of historical contexts. In ancient Egypt, hidden doors were used to protect tombs and temples from intruders. In medieval Europe, hidden doors were used to provide access to secret passages and hiding places. And in the modern world, hidden doors are often used to create secret rooms and passages in homes, businesses, and other buildings.

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