The Kondyor Massif intrusion

The Kondyor Massif  is a perfect circular intrusion, about 8 kilometres (5 mi) in diameter, in Khabarovsk Krai, Far Eastern Federal District, Russian Federation, roughly 600 km (373 mi) west-to-southwest of Okhotsk, or some 570 km (354 mi) south-east of Yakutsk. It is reached from Yakutsk by road via Amga. It is an important source of platinum.

Since 1984 Artel starateley ?Amur? (part of the Russian Platinum group) develops this unique field of alluvial platinum.

credit: NASA/GSFC/METI/ERSDAC/JAROS and U.S./Japan ASTER Science Team