Russia's seismic and volcanic energy is concentrated in its far east, where the Pacific Plate subducts beneath the Okhotsk and Eurasian plates along the Kamchatka Peninsula and the Kuril Islands. This section of the Ring of Fire is one of the most volcanically productive regions on the planet, while the Caucasus and Baikal rift add further seismicity elsewhere.
Kamchatka alone holds more than 300 volcanoes, around 30 of them active, including Klyuchevskaya Sopka, Eurasia's tallest active volcano. The offshore megathrust has produced enormous earthquakes, such as the magnitude 9.0 Kamchatka event of 1952 that triggered a Pacific-wide tsunami reaching Hawaii and beyond.