Cell/Vault door open, creak and slam

This is a field recording of a heavy, armoured door opening and closing in a police custody centre somewhere in the North of England.

The first 'bleep' is the sound of the access card triggering the lock, followed by the creak of opening, the creak of the door closing on the shutter before the reverberant 'slam' of the door itself closing.

Recorded using the iPhone voice memo app with the stock microphone, in a 3x5m concrete room.