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Our guide
Mount Hakone is a complex volcano in Kanagawa, cut by two overlapping calderas, the larger 10 by 11 km across, formed by two great explosive eruptions about 180,000 and 49,000–60,000 years ago. Lake Ashi lies between the south-western caldera wall and half a dozen later lava domes that rose along a line running south-west to north-east through the middle of the calderas. The domes grew progressively southward, and the largest and youngest, Mount Kami (1,438 m), is Hakone's highest point. The Haya River canyon breaks through the calderas to the east, Mount Ashigara is a parasitic cone, and the latest magmatic eruption was 2,900 years ago.
Lake Ashi Sightseeing Cruise is about 2.9 km from the point this page is mapped to, and Hakone Open-Air Museum about 3 km. As a volcanic area, check current conditions before you go.
Written by japan-spots.com (2026-09-22) from the sources credited on this page. Distances are straight lines between map positions.
Photos
Photos from Wikimedia Commons, each under its own licence — see credits
- Mt.Hakone from Lake Ashi — Gifu-sizu · CC0 · source · resized
- 箱根駒ケ岳から芦ノ湖の全貌 — Koda6029 · CC0 · source · resized
- 明星ヶ岳からの明神ヶ岳 — Koda6029 · CC0 · source · resized
- View from Yagurasawa Pass 01-2 — Σ64 · CC BY 3.0 · source · resized
- Mt.Kami from Mt.Kintoki 02 — Σ64 · CC BY 3.0 · source · resized
- Hakone kintokiyama01 — Σ64 · CC BY-SA 3.0 · source · resized
- Hakone Volcano 20121110 — Batholith · Public domain · source · resized
- Hakone Volcano 20120910 — Batholith (Wikimedia Commons) Batholith (Wikipedia) · Public domain · source · resized
- Hakone volcano 20101204 a — Batholith · Public domain · source · resized
What this place is
Mount Hakone (箱根山, Hakoneyama), with its highest peak Mount Kami (1,438 meters), is a complex volcano in Kanagawa Prefecture, Japan that is truncated by two overlapping calderas, the largest of which is 10 × 11 km wide. The calderas were formed as a result of two major explosive eruptions about 180,000 and 49,000–60,000 years ago. Lake Ashi lies between the southwestern caldera wall and a half dozen post-caldera lava domes that arose along a southwest–northeastern trend cutting through the center of the calderas. Dome growth occurred progressively to the south, and the largest and youngest of them, Mount Kami, forms the high point of Hakone. The calderas are breached to the east by the Haya River canyon. Mount Ashigara is a parasitic cone. The latest magmatic eruptive activity at Hakone occurred 2,900 years ago.
Background text from Wikipedia (CC BY-SA 4.0)
What to expect at this type of place: Mountain
Getting there
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