A low-level environmental anomaly observed within the Western Maritime Reading Room following periods of storm activity and bell-related archive events. The phenomenon manifests as structured condensation patterns forming across maritime window glass despite stable internal temperatures and environmental conditions inconsistent with natural moisture accumulation. During the primary observation cycle condensation developed into curved linear formations resembling incomplete navigational charts coastlines routes or topographical markings. Similar geometric tendencies have been noted in previous archive phenomena involving thread spirals constellation arrangements preservation diagrams and botanical growth patterns. Current evidence suggests the formations may represent informational displays rather than ordinary environmental effects. The phenomenon appears most frequently during periods of archive calm following heightened anomalous activity suggesting a possible relationship to stabilization cycles or keeper-guidance systems. No complete map has yet been recorded before natural dissipation occurs.