Mataiva, Tepoetiriura or Lazarev atoll is a coral atoll in the Tuamotu Archipelago. It is located in the Palliser group, and is the westernmost of the Tuamotus. The nearest atoll, Tikehau, is located

Vostok was a 28-gun sloop-of-war of the Imperial Russian Navy, the lead ship of the First Russian Antarctic Expedition in 1819–1821, during which Fabian Gottlieb von Bellingshausen and Mikhail Lazarev