Tyatya
Chachadake
Tyatya in 2010, viewed from the south-west
Highest point
Elevation	1,822 m (5,978 ft)[1]
Prominence	1,822 m (5,978 ft)[2]
Listing	Ultra
Coordinates	44°21′3″N 146°15′23″E / 44.35083°N 146.25639°E / 44.35083; 146.25639[1]
Geography
Tyatya Kunashir, Kuril Islands, Russia
Geology
Mountain type	Stratovolcano / somma volcano
Last eruption	June 1981[1]

Tyatya (Russian: Тятя, also spelled Tiatia and known as Chachadake (爺爺岳) in Japanese) is a volcano located in the northeastern part of Kunashir Island, Kuril Islands, Russia. It is the highest peak on the island with an elevation of 1,819 metres (5,968 ft).^[1] Tyatya is one of the finest examples anywhere in the world of a somma volcano, a stratovolcano whose summit has collapsed to form a caldera which has then been mostly refilled by a new, younger volcanic cone which rises above the caldera rim.^[1]

See also

• List of volcanoes in Russia
• List of ultras of Northeast Asia

References

External links

Wikimedia Commons has media related to Tyatya.

• Chachadake (Tiatia): Global Volcanism Program - Smithsonian Institution
• Chachadake - Japan Meteorological Agency (in Japanese)
• "Chachadake: National catalogue of the active volcanoes in Japan" (PDF). - Japan Meteorological Agency
• Chacha Dake (Tyatya) - Geological Survey of Japan

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