Bliznetsy ("twins" in Russian) are two adjacent lava flows erupted from closely spaced vents. Area of the two lava flows is 5 km2 (length 2.5 km, width 2 km). Volume of the erupted medium-K andesite is estimated at 0.15 km3. Based on tephrochronological and radiocarbon data, the eruption took place ~3 ka BP (Pevzner, 2006).
Braitseva O.A., Ponomareva V.V., Melekestsev I.V., Sulerzhitskiy L.D., Pevzner M.M. Holocene Kamchatka volcanoes. 2002.
Pevzner M.M. Holocene volcanism of Northern Kamchatka: The spatiotemporal aspect // Doklady Earth Sciences. 2006. Т. 409. № 2. С. 884-887.