57.4400°N, 18.4400°E.
Stånga Trojaborg is a prehistoric or medieval stone-formation labyrinth in Gotland Island, Sweden. The design is a classical 11circuit layout with 11 circuits, 12 walls, built of stone. Construction date is recorded as unknown in the surveyed catalogue. Current condition: intact. A stone labyrinth near Stånga in central Gotland — an area famous for the annual Stångaspelen, traditional Viking-era games including varpa (stone throwing) that have been held continuously since the Middle Ages. Documentation sources: Gotland Trojaborgs PDF. Listed in the surveyed catalogue as one node in a larger global registry of the same single design. The labyrinth is one of several hundred sites of this type catalogued globally; each preserves the same unicursal walking-pattern with regional variation in scale, material, and date.
The labyrinth tradition spans at least 4,000 years of documented practice across northern Europe, the Mediterranean, the British Isles, North America, and the Indian subcontinent.