Mt. Hakone is a volcano centered in Hakone Town, Kanagawa Prefecture and a designated part of the Fuji-Hakone-Izu National Park. Lake Ashi lies against the south-western wall of the Hakone caldera, and many hot springs such as Hakone Onsen and Yugawara Onsen well up from its sides and base. It has been a health resort area such ancient times, and is now a well-known sight-seeing area.