Lake Ashi was formed approximately 3,000 years ago following a major eruption of Mount Hakone, commonly known as Ashinoko - a classic caldera lake. Its steep surrounding mountains and lack of major natural river outlets reflect its volcanic origins, creating a uniquely enclosed and tranquil landscape at the center of Hakone National Park.

One of the lake’s most important spiritual landmarks is the Heiwa no Torii (Torii of Peace) of Hakone Shrine, standing directly in the water near Moto-Hakone. Erected in 1952 to commemorate the post-war peace treaty, the gate symbolizes purification through water for those approaching the shrine and has become one of Japan’s most iconic photographic scenes.

Lake Ashi is also famous for its Pirate Ship Cruises, uniquely styled after 18th-century European warships inspired by vessels such as the Vasa. These ships operate both as sightseeing cruises and practical transportation, connecting Togendai, Moto-Hakone, and Hakone-machi, while offering classic Mount Fuji views on clear days.

On exceptionally calm mornings, visitors may witness the rare “Double Fuji” phenomenon (Sasa-Fuji)—a perfect mirror reflection of Mount Fuji on the lake’s surface. Along the southern shore, travelers can explore the Hakone Kyu-Kaido (Old Tokaido Road), including the atmospheric Cedar Avenue, where 400-year-old trees planted by the Tokugawa Shogunate once shaded samurai and merchants traveling between Kyoto and Edo.

Beyond the main shrine, the lesser-known Kuzuryu Shrine (Nine-Headed Dragon Shrine) sits quietly along the lakeside. According to legend, a fearsome dragon once inhabited the lake before being pacified here; today, the shrine is especially popular among visitors praying for good fortune and success in relationships.

From Tokyo:
Take the Odakyu Romancecar from Shinjuku Station to Hakone-Yumoto Station (approx. 90 minutes).

From Hakone-Yumoto to the Lake:

• Fastest option: Take the Hakone Tozan Bus (Lines H, K, or R) directly to Moto-Hakone (approx. 35 minutes).

• Scenic option (Hakone Round Course): Hakone Tozan Railway to Gora → Cable Car to Sounzan → Ropeway to Togendai Port, arriving at Lake Ashi.

• Mount Fuji visibility: Best chances are early morning, especially from November to February.

• Hakone Free Pass: Highly recommended; it covers the entire Round Course, Hakone Tozan Buses, Pirate Ships, and the Ropeway.

• Best viewpoints: The south shore (Moto-Hakone) offers the most classic Fuji compositions.

• Relaxation tip: Several lakeside cafés, such as Bakery & Table, offer free hot spring foot baths while dining.

Admission Fee:

• Lake access: Free

• Pirate Ship Cruise: Approx. 1,200 JPY (one-way)

• Included with Hakone Free Pass

Opening Time:

• Lake & walking areas: Open 24 hours

• Pirate ships & Ropeway: Generally 9:00 AM – 5:00 PM
  (Shorter operating hours during winter and poor weather)