Document Reference: TW-111
The Cartographer's Mistake
TW-111 is stored flat in a sealed archival case in a humidity-controlled vault. No writing implements are permitted within the storage room. The case is constructed so the map is never visible to personnel handling it. A duplicate case containing a blank vellum sheet is used for transport drills.
TW-111 is a hand-drawn map, approximately 60cm x 90cm, rendered in iron gall ink on vellum. Any location marked on the map will, within 72 hours, develop a topographic anomaly matching the map's notation — roads that curve where the map bends them, rivers that split where the pen wavered. The effect is permanent. The map currently shows 847 annotations in at least 12 different handwriting styles spanning an estimated 400 years.
TW-111 was recovered from the estate of a deceased cartographer whose property records showed a stream running through his land that appeared on no municipal survey. Investigation confirmed the stream had not existed prior to the cartographer's ownership. The map was found in a locked study, surrounded by 14 crumpled drafts.
Incident Report #001 — Date: [REDACTED]
A junior archivist accidentally rested a pen on the case seal and a small ink blot transferred to the interior surface. Forty-eight hours later, a 3-metre crater appeared in the car park adjacent to the vault wing, precisely beneath where the blot fell on the map. No personnel were harmed. The archivist was reassigned.