CLASSIFIED DOCUMENT ASGN9-ECHO-12. Incident report: "The Folding of Kraelion Cathedral." On 23/02/1947, a localized chrono-disruption occurred, causing the cathedral's architecture to involuntarily recurse. Observers described the structure as "unraveling into itself," with stone pillars and vaulted ceilings collapsing into fractal iterations. Witnesses reported experiencing "stroboscopic nostalgia" and "echo-formations" of forgotten memories. The anomaly persisted for 37 minutes, leaving behind an altered floor plan and 147 unaccounted-for worshippers. Further investigation is hindered by the cathedral's newfound ability to "spectrally occlude" surveillance efforts. Recommendations: establish a task force to study the Kraelion Paradox and its implications for spatial reasoning.