This island is located in the Kara Sea, off the northern end of the estuary of the Yenisei river, at just 35 km from the nearest coast.
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This island belongs to the Krasnoyarsk Krai administrative division of the Russian Federation. It is also part of the Great Arctic State Nature Reserve, the largest nature reserve of Russia.
This island is named after Aleksandr Mikhaylovich Sibiryakov, an Imperial Russian gold-mine proprietor. Sibiryakov financed explorations to Siberia, such as Nordenskiöld's, and also took part in some expeditions of his own.