Steam vents, volcanic trails, and sulfur-boiled eggs with a view—Owakudani is Hakone’s wildest natural wonder. Created from the last eruption of Mount Hakone over 3,000 years ago, this active volcanic valley still bubbles and smokes. From the Hakone Ropeway, you’ll get panoramic views of sulfur vents, distant peaks, and on a clear day, Mt. Fuji rising in the background. It’s also famous for its jet-black eggs, hard-boiled in sulfur springs, which local legend says will extend your life by seven years.
Walk trails are surrounded by steam vents, bubbling mud pools, and yellow-stained rocks from sulfur deposits. The air smells strongly of minerals, an unmistakable scent that tells you the earth is very much alive here. It’s one of the most geologically active places accessible to the public in the country.
The best way to see Owakudani is from above. Board the Hakone Ropeway, a scenic cable car that glides right over the valley. As you ride, you’ll get a full view of the steaming vents below and, on a clear day, a view of Mt. Fuji in the distance. It’s one of the most iconic aerial experiences in the Hakone region.
No visit is complete without trying the legendary eggs boiled in the sulfur hot springs that turn jet black. Legend has it that eating one adds seven years to your life. Whether or not you believe it, cracking one open while the steam swirls around you is a different experience. Around the valley, you'll also find shops selling snacks, volcanic salt, black egg-themed merchandise, and other regional specialities you won’t find elsewhere.
Owakudani is safe, but active. That’s why it features designated observation decks—raised platforms where you can safely watch the steam rising from the vents and take photos. These viewpoints offer the best mix of close-up views and comfort.
Owakudani is perfectly positioned along the Hakone sightseeing loop, a well-known route popular with travelers from Tokyo and beyond. The valley is located between Sounzan and Togendai stations, making it easy to pair with other highlights like Lake Ashi cruises, Hakone Shrine, or a relaxing dip in a local onsen—all in a single day.
Owakudani is typically part of a larger day trip, so here’s what to expect:
Owakudani is beautiful, and occasionally closed due to volcanic activity. Here’s how to plan smart:
Volcanic vents shoot up plumes that look like something from a sci-fi film.
Yes. It's monitored closely and closed if activity increases. Masks are recommended for individuals with asthma, wheezing or any other breathing problems.
Most people spend 30–60 minutes, not including the ropeway ride.
Morning for fewer crowds and better Fuji visibility, especially in winter or early spring.
No. They’re regular eggs boiled in sulfur springs.
Entry into the valley is free. There will be a small admission fee for activities like the Hakone ropeway and Owakudani walking trail.
Mount Fuji Guided Day Tour with Lake Ashi Cruise & Hakone Ropeway