Back at the palace, they found that tiny keyhole in the woodpaneling — just where the plan suggested it would be. They had a key made so they could open the door – and they discovered a secret passageway 360 years old.
"To say we were surprised is an understatement — we really thought it had been walled-up forever after the war," Mark Collins, Parliament's estates historian, said in a statement. They knew such a passage had once existed, but believed that it had been filled in after the palace was bombed during World War II.
Behind the door was a small room, with hinges for a door that would have been more than 11 feet high and that would have opened into Westminster Hall.
It turns out to be a passageway with a rich history.
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