Kutkhiny Baty, a pumice rock formation outcrop located 4 km from the source of the Ozernaya River(Lake Kurile), near the southern tip of the Kamchatka Peninsula, Russia. Kurile Lake is a caldera and crater lake inKamchatka, Russia. It is also known as Kurilskoye Lake or Kuril Lake. It is part of the Eastern Volcanic Zone of Kamchatka which, together with the Sredinny Range, forms one of the volcanic belts of Kamchatka. Pumice (pronunciation: /ˈpʌmᵻs/), called pumicite in its powdered or dust form, is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals. It is typically light colored.
The idea that pumices around Kurile Lake were formed by an eruption in the area of the lake was first suggested by Piip in 1947. Later research identified these pumices as the product of the caldera-forming eruption, although some scepticism remains, which considers these pumices as the product of fissure eruptions. An earlier Pleistocene caldera-forming eruption took place 41,500 years ago, ash deposits from this eruption are found as far away as Magadan, 1,000 kilometres (620 mi) away from Kurile Lake, and possibly Lake El′gygytgyn. Source: Wikipedia
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