Trap Door
Trap doors, also known as secret doors, are one thing while hidden doors are another. Both may catch you off guard if you don’t know they’re there. Hidden rooms are utilized for concealment, but trap doors are typically used to flee.
The last occupant of this home, clearly believed they needed the means to escape and get out quickly! The concept behind a trap door is also more appealing; it has a James Bond vibe to it, doesn’t it? Or am I the only one who thinks so?