Electronic version of the book "The Pearl of Kamchatka - Valley of Geysers". Popular scientific sketch, the Guidebook (text by V.M. Sugrobov, N.G. Sugrobova, G.A. Karpov and V.L. Leonov, photos by N.P. Smelov) was compiled in co-operation of “Geothermal energetic community” Association due to financial support of Nauka SC at constant attention and encouraging help from Prof. O.A. Povarov. This book was prepared for the opening of International Geothermal Workshop IGW-2004 in Petropavlovsk-Kamchatsky. Authors hope that this book will be interest for specialists in geothermal science and technology as well as for tourists wishing to know the unique nature of Kamchatka.