This position was actually suggested by River herself! My beautiful studio assistant made a remark when she was giving a tour of the studio (for a custom video) that she could be attached to the wooden wall when she saw the metal D-ring was still screwed in place…

File Name: chained_to_the_wall_bdg.mp4
Format: MPEG-4
File Size: 197 MiB
Duration: 4 min 13 s
Resolution: 1920×1080 (16:9)