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箱根山
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箱根山自然

箱根山

Mount Hakone

箱根山(はこねやま)は、日本の神奈川県足柄下郡箱根町を中心に、神奈川県と静岡県にまたがる火山の総称である(内訳は『主な山』節参照)。富士箱根伊豆国立公園に指定されている。地名「箱根」は古くは「函根」と記したが、同じく「箱根山」は函根山と記し、函嶺(かんれい)ともいった(函嶺洞門、函南町などといった地名に名残がある)。

History & Cultural Significance

Mount Hakone is not just a geological marvel but a sacred site woven into Japan’s spiritual and cultural fabric. Its formation through two massive explosive eruptions over 180,000 and 50,000 years ago shaped the dramatic calderas that define the landscape today, with Lake Ashi nestled in the southwestern rim like a mirror reflecting the sky. For centuries, the mountain has been revered as a place of spiritual power—especially by the local Shinto communities who believed its volcanic energies were imbued with divine presence.

The area around Mount Hakone became a pilgrimage route during the Edo period, when travelers journeyed along the Nakasendo Trail to visit shrines and hot springs. The famous Tōkaidō Road also passed nearby, making Hakone a key stop for merchants and daimyo alike. Today, remnants of this historic network are still visible in the quiet stone pathways and ancient torii gates that line forest trails leading toward the summit.

What to See & Do

Hike the scenic trail from Gora to the summit of Mount Kami (1,438 meters) for panoramic views of Lake Ashi, the Fuji-Hakone-Izu National Park, and even, on clear days, Mount Fuji itself. The climb takes about 2–3 hours one way and rewards you with sweeping vistas from the observation deck at the peak, where a weather station stands sentinel amid the misty air.

For a more leisurely experience, take the Hakone Ropeway from Sengokuhara to the top of Mount Tozawa, offering a bird’s-eye view of the volcanic caldera and the lush greenery below. At the summit, explore the small shrine dedicated to the mountain deity and walk along the trail past fumaroles emitting wisps of steam—nature’s own breath rising from the earth.

Atmosphere & Experience

Walking through the forests near Mount Hakone feels like stepping into a living postcard: moss-covered trees arch overhead, the air is crisp and scented with pine and damp earth, and the occasional puff of steam from a fumarole adds a whisper of the mountain’s inner fire. As dusk falls, the light turns golden over Lake Ashi, and the reflection of the mountains glows like liquid amber—perfect for quiet contemplation or a romantic evening stroll.

Insider Tips

Visit early in the morning to beat the crowds and catch the first light painting Mount Fuji in soft pink hues across Lake Ashi—this moment is fleeting but unforgettable.

Bring a lightweight jacket even in summer; temperatures at the summit can drop sharply, especially after sunset, and wind can make it feel much colder than expected.

Take the short detour from the Hakone Ropeway to the Oboke Trail—a lesser-known path that leads to a hidden viewpoint overlooking the entire caldera, often missed by tourists.

If hiking to the summit, start from the Gora side rather than Sengokuhara; the trail is slightly less steep and passes through older forest zones rich in biodiversity.

Stop by the Hakone Shrine near the base of the mountain before your hike—its serene atmosphere and wooden torii gate offer a peaceful ritual to begin your journey.

Fresh green foliage14C, clear sky. Forecast: 12-20C, Clear, CloudsCrowds: MediumEarly mornings for fewer crowds
Updated 2 days ago

基本情報

所要時間

2〜3時間

料金

Mid-range

現地のヒント

  • Visit early in the morning to beat the crowds and catch the first light painting Mount Fuji in soft pink hues across Lake Ashi—this moment is fleeting but unforgettable.
  • Bring a lightweight jacket even in summer; temperatures at the summit can drop sharply, especially after sunset, and wind can make it feel much colder than expected.
  • Take the short detour from the Hakone Ropeway to the Oboke Trail—a lesser-known path that leads to a hidden viewpoint overlooking the entire caldera, often missed by tourists.
  • If hiking to the summit, start from the Gora side rather than Sengokuhara; the trail is slightly less steep and passes through older forest zones rich in biodiversity.
  • Stop by the Hakone Shrine near the base of the mountain before your hike—its serene atmosphere and wooden torii gate offer a peaceful ritual to begin your journey.
  • Avoid weekends and holidays if possible—Hakone sees heavy foot traffic, especially around the lake and ropeway stations.
  • Pack snacks and water; while there are vending machines along the trails, options are limited, and rest stops are sparse at higher elevations.
  • Check the weather forecast before heading up—volcanic areas like Hakone can change rapidly, and fog or sudden rain can reduce visibility and safety.

訪問時期

1月

5°C

New Year shrine visits at Hakone Shrine, serene winter landscapes

2月

6°C

Plum blossoms begin to bloom in the lower slopes

3月

9°C

Early cherry blossoms near Lake Ashi and trails

4月

14°C

Cherry blossom peak; popular for scenic views from the Hakone Loop

5月

19°C

Fresh green foliage and clear skies ideal for hiking and sightseeing

6月

22°C

Hydrangea season begins; rainy season brings misty mountain views

7月

26°C

Summer festivals and outdoor activities on the mountain trails

8月

27°C

Obon period with increased visitors and evening illuminations

9月

24°C

Late summer haze; typhoon risk affects visibility and access

10月

18°C

Autumn foliage begins to color the forested slopes

11月

12°C

Autumn foliage peak; stunning views from the Hakone Observatory

12月

7°C

Winter illuminations at Hakone Shrine and snow-dusted peaks

閑散期やや混雑混雑期非常に混雑

yesterdayに更新

旅行者の声

箱根山を訪れた方々のリアルな体験談。