The Hakone Volcano is situated within the Fuji-Hakone-Izu National Park (Kanagawa Prefecture).
The Hakone is a stratovolcano with a double caldera. The Lake Ashi was formed in the caldera of Hakone after the volcano's last eruption, about 3000 years ago.
The central cones are known as Kanmuri-gatake (1'409m), Mt. Kamiyama (1'438m / Hakones highest peak), (1'356m), Mt. Kamifutago (1'091m), Mt. Shimofutago (1'065m) and Mt. Sowun (1'153m).
The summits of the northern caldera rim are Mt. Byobu (948m), Mt. Washizu (834m) and Mt. Asama (802m).
The summits of the southern caldera rim are Mt. Shirogane (993m), Mt.Daikan (1'011m), Mt.Mikuni (1'102m), Mt.Marudake (1'156m), Mt.Kintoki (1'213m) and the lateral cone of an old Hakone volcano Mt.Myojingatake (1'169m) and Mt. Myozyogadake (924m).
Japan 1951, Hakone Volcano (Kamiyama).
The stamp is showing a view from the east across the Lake Ashi towards the western crater rim of the Hakone Caldera with Mt. Mikuni. The Mount Fuji is just right behind the Mt. Mikuni (in the clouds).
Japan 2013, Odawara-juku.
9th station of "The 53 Stations of the Tōkaidō", Hiroshige Utagawa.
Kamiyama (highest peak of Hakone)
In the far background right, the Mt. Fuji.
The stamp was issued in the series "International Letter Writing Week".