Lowered ceiling

At the top right of the picture are visible parts of a few boards forming the top end of a sloping ceiling. Where the sloping ceiling stops, a sheet of blue material is visible an inch or two above it, held together in one place by a piece of yellow tape. From two places at the top of the sloping ceiling battens extend horizontally to the opposite wall. Only a narrow strip of blue is visible because there are flat brown things resting on the top of the battens. In the background at the bottom right the top left corner of the doorway is just visible a little below the level of the battens.