Ritual Chamber, a sparse silver-gelatin archival film still in an East-German institute, viewed from a high oblique angle. A row of stamped narrator cards is arranged on a low slate plinth, linked by a physical black chain; one broken link fluoresces phosphor green into deep shadow. Gloved hands enter from the edge to align the cards. The chamber wall carries an interlocking cream-and-dark stepped-cross institute tile, while the plinth rests on real hexagonal honeycomb floor tiling. Callout 01 source stamp, 03 corroboration chain, 05 quarantine drawer. Include a single mis-struck circular BRAINHUGGERS BUREAU · SYMBIOSE-ARCHIV seal and a short green vial band; one card carries the quietly wrong portrait of a crow in a tie. No faces, no folio label. Output in exactly 1122 x 1402 px, 4:5 portrait ratio.