Daisen, Sacred stratovolcano in Tottori Prefecture, Japan.

Daisen is a stratovolcano in Tottori Prefecture whose summit, Kengamine, reaches 1729 meters, the highest point in the Chugoku region. Its base measures about 35 kilometers east-west and 30 kilometers north-south, with a total volume of roughly 120 cubic kilometers, making it one of Japan's largest dacite volcanoes. The broad cone rises above forested foothills, its upper slopes streaked with snow around a rounded peak.

Eruptions formed this volcano around 50,000 years ago and ended roughly 10,000 years ago inside the caldera of an older mountain. A major eruption phase scattered ash across much of Japan, leaving traces as far as the northeastern region.

The name Daisen is the go-on reading of 大山, "great mountain"; the Izumo Fudoki of 733 calls it Ōgami-take, and it is also Hōki Fuji or Izumo Fuji depending on the viewing side. Daisen-ji, founded in 718, and the Ōgamiyama Jinja just above it served Shugendō ascetics, and common people could not climb until the Edo period.

A trail from the temple reaches Misen summit at 1709 meters (5607 feet) in roughly three hours, while the highest point remains off-limits. The climb through forest shows how vegetation changes with altitude, and on clear days views extend across the surrounding mountains.

On the steep northern slopes, snow often lingers until late spring, creating an unusual backdrop above green valleys. The shape from certain angles resembles other well-known cone volcanoes, earning it a special place in regional comparisons.