The film tells about the work of volcanologists on the island of Kunashir. Expedition of volcanologists to the volcanoes Tyatya, Mendeleev, Golovnin. Doctor of Geological and Mineralogical Sciences EK Markhinin shares his memories of the eruption of the Tolbachik volcano in Kamchatka (synchronously). Landscapes of the island of Kunashir. Volcanic landscapes.