I got this encounter the first time I used the black sketchbook this run - I can't find it anywhere on the wiki. I wonder if it was changed recently or if it's unrecorded/undiscovered.
You find a strange compilation of sketches, displaying crates scattered throughout the surreal warehouse the artist seems to obsess over. They're mostly normal enough, although some of them seem to bleed or rest in pools of offal.
(Search for a view inside the crates)
(Look for other crate arrangements)
(See if there's a view from atop the crates)
The first choice (search for a view) leads to the normal collection of limbs message.