G.M.Gavrilenko1, P.G.Gavrilenko2

1The Institute of Volcanology, FED, RAS , 683006,
Petropavlovsk-Kamchatsky, Piip blvd., 9, Russia;e-mail: gavrilenko@kscnet.ru
2Moscow State University; e-mail: polinka_gav@rambler.ru

We present the summary of new and earlier published data on the lakes, which periodically emerge in the active craters of Mutnovsky volcano.