In this paper, we present the seismic structure beneath the Kluchevskoy volcano group corresponding to the year 2004, in the end of a relatively silent period before the strong eruptions of the Kluchevskoy and Bezynianny volcanoes that occurred in the beginning of 2005. This seismic model was verified using the odd/even test and synthetic modeling. The resulting 3D distributions of seismic parameters clearly reveal three depth levels of magma storage.