Stop Mushroom

At the bottom of the shaft is installed a \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\"STOP\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\" switch type mushroom which is accessible from the front door of the first stop and interrupts the operation of the elevator, as well as a socket.