Onega Peninsula Onega Peninsula The Onega Peninsula is located in Arkhangelsk Oblast, Russia. It protrudes into the White Sea, with Onega Bay to the south-west, and Dvina Bay to the north-east. The length of the peninsula is about , and the width varies between and . The coastal area of the peninsula is populated. The villages (counterclockwise) of Nyonoksa, Syuzma, Krasnaya Gora, Pertominsk, Unsky, Yarenga, Lopshenga, Letny Navolok, Letnyaya Zolotitsa, Pushlakhta, Lyamtsa, Purnema, and Nizhmozero are all located at or near the coast. The north-eastern coast of the peninsula is crossed by the Una Bay, a gulf in the Dvina Bay, which
Lake Ladoga were connected by a strait or a river outlet at least until the formation of the River Neva, and possibly even much later, until the 12th century AD or so. At 9,500 BP, Lake Onega, previously draining into the White Sea, started emptying into Ladoga via the River Svir. Between 9,500 and 9,100 BP, during the transgression of Ancylus Lake, the next freshwater stage of the Baltic, Ladoga certainly became part of it, even if they hadn't been connected immediately before. During the Ancylus Lake subsequent regression, around 8,800 BP Ladoga became isolated. Ladoga slowly transgressed in its southern part