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In the upper reaches of the Geyser River at the foot of the Kikhpinych Volcano, there is a small valley measuring two kilometers by 100–500 meters where animals regularly perish.

Special investigations have shown that the death of animals and birds is due to the high concentration of poisonous gases, mainly hydrogen sulfide, carbon dioxide, carbon disulphide, and others.

Read more about this unique place at http://kronoki.org/territories/reserve/unique/28

or in Russian at http://shpilenok.livejournal.com/8444.html

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