 Volcano before the 1964 eruption. Photo by G.Gorshkov. |
 Volcano after the 1964 eruption. Horseshoe-shaped crater was formed during this eruption. Photo by G.Gorshkov. |
 Front of the 1964 debris avalanche deposit. |
 Hummocky surface of the 1964 debris avalanche deposit. View from helicopter. |
 Hummocks of the 1964 debris avalanche. |
 Surface of coarse tephra (pumice) deposited during plinian stage of the 1964 eruption. |