Usgalimal Rock Engravings (Goa Labyrinth)

Carved on a laterite riverbed of the Kushavati River, the Usgalimal labyrinth is the oldest known labyrinth in Asia — a 3D raised-line design that differs fundamentally from European carved-groove labyrinths. Accompanied by petroglyphs of bulls, spirals, and human figures, the complex dates to the Neolithic period (possibly 6000-4000 BCE). During monsoon season, the river submerges the carvings entirely, revealing them only when water levels drop — a natural concealment mechanism. At 100.79° Giza bearing, Usgalimal faces Giza from the east, a reversal of the westward orientation seen in European labyrinths. Goa's laterite geology — iron-rich tropical soil hardened into stone — provided a medium that has preserved these carvings for potentially 8,000 years.