That's the entrance to the Round Shed in the background here at Laira with 7916 " Mobberley Hall " on its homeshed , a former Newton Abbot engine .
7916 is facing eastwards so may well be booked to go off shed via the Laira Junction exit to pick up a freight at Tavistock Junction yards , or alternatively is going to take the more usual route off shed via the Lipson Triangle and work down into Cornwall.