Putorana Plateau
69°N, 95°E — Central Siberia, north of the Arctic Circle — basalt trap 800 × 500 km, near the geographic center of Russia
What's documented
The Putorana Plateau is a basalt massif covering roughly 250,000 km² in Central Siberia. Its lavas — the Siberian Traps — are linked to the end-Permian extinction event (~252 Ma) and represent one of the largest known continental flood-basalt provinces. The plateau hosts about 25,000 lakes; Lake Vivi, near its center, is conventionally cited as the geographic center of the Russian Federation. UNESCO World Heritage Site, 2010. Helicopter-only access across most of its area.
Public-record imagery