Lake Ashi

Overview

Lake Ashi is a scenic crater lake in the volcanic caldera of Hakone, formed approximately 3,000 years ago. On clear days, the lake reflects a stunning mirror image of Mount Fuji, making it one of the most iconic views in Japan.

Highlights

• Mount Fuji Reflections: The classic view of Fuji reflected in the still waters of the lake, best seen in early morning during autumn and winter months.
• Pirate Ship Cruises: Ornate replica pirate ships operated by Hakone Sightseeing Cruise cross the lake between Togendai, Hakone-machi, and Moto-Hakone ports.
• Lakeside Torii: The vermillion torii gate of Hakone Shrine rising from the water's edge, visible from the cruise ships, is an iconic Hakone image.

History

The lake formed in the caldera created by the explosive eruption of Mount Kamiyama around 3,000 years ago. During the Edo period, it served as a natural barrier alongside the Hakone Checkpoint, controlling travel on the Tokaido highway between Edo and Kyoto.

Visitor Tips

• Clear Days: Mount Fuji is most visible in the cooler months (November–February) and early mornings. Summer haze often obscures it.
• Free Pass: The Hakone Free Pass covers the pirate ship cruise, making it a cost-effective way to enjoy the lake.
• Duration: 1–1.5 hours for a cruise.