What is Chatsubomigoke Park?
Chatsubomigoke Park (チャツボミゴケ公園) is a secluded spot in Nakanojō, Gunma Prefecture where a fantastical moss landscape spreads out.
The area is covered by the native “Chatsubomigoke” moss (車坪苔), which grows where acidic hot spring water flows, creating an emerald-green, otherworldly scene.
This rare moss is found in only a few places in Japan, making the park a mysterious natural attraction born from Gunma’s environment that has gained attention in recent years.
One of the charms is that the scenery changes with the seasons—from fresh green in spring to snowy landscapes in winter—offering different views throughout the year.
Highlights of Chatsubomigoke Park
1. A magical carpet of moss — a mystical landscape
Unlike ordinary mosses, Chatsubomigoke only grows in highly acidic hot spring water, making it an extremely rare plant.
Inside the park, a green carpet stretches along streams fed by spring water, creating a scenery that feels like another world.
① One of Japan’s few acidic-moss habitats
Chatsubomigoke is found in Japan only in parts of Hokkaido and this area of Gunma—a uniquely special landscape that can only be seen here.
② A world straight out of a Studio Ghibli film
The expanses of green moss, flowing spring water, and surrounding forest combine to form a scene reminiscent of a moment from a Studio Ghibli film.
Visitors are captivated by the view, and it’s also a popular spot for Instagram-worthy photos.
2. Recommended walking routes inside the park
Well-maintained walking paths make it easy even for beginners to explore the park.
You can walk the whole route at a relaxed pace in about an hour, so it’s easy to enjoy as a short outing.
① First Chatsubomigoke Colony
The park’s main spot and the area with the largest concentration of Chatsubomigoke.
The contrast between the stream and the moss is beautiful, making it ideal for photography.
② Iron ore mining remains — “Ana Jigoku” (Hole Hell)
This area was once used for iron ore mining, and the remains are called “Ana Jigoku.”
Now transformed into a moss-covered, dreamlike place, it offers a landscape where history and nature blend.
③ Panoramic view from the observation deck
At the end of the trail there is an observation deck where you can take in the Chatsubomigoke colonies and the surrounding forest.
Because the scenery changes with the seasons, you’ll discover new charms each time you visit.
3. Chatsubomigoke Park through the seasons
Chatsubomigoke Park is best enjoyed from spring through autumn.
① Spring (April–June)
- Fresh greenery season—the moss is at its most vivid green.
- Cool, pleasant weather makes it ideal for walking.
② Summer (July–September)
- The greens of the trees and moss deepen, offering a beautiful contrast.
- Enjoy a refreshing walk to the sound of clear streams.
③ Autumn (October–November)
- Autumn leaves and green moss create a magical interplay of colors.
- Distinct autumnal hues spread across the landscape.
④ Winter (December–March)
General opening is suspended in winter (special guided tours only).
- The moss stands out against the snow, creating a mysterious scene.
4. Recommended sights around the park
✅ Shima Onsen (one of Japan’s three famed “beauty” hot springs)
✅ Kusatsu Onsen (one of Japan’s most famous hot spring towns, known for its “Yubatake”)
✅ Nakanojo Gardens (a beautiful garden where seasonal flowers can be enjoyed)
Practical information for travelers
How to get there (from Tokyo to Chatsubomigoke Park)
By train + bus
- Tokyo Station → Naganohara-Kusatsuguchi Station (JR Limited Express Kusatsu ~ about 2 hours 30 minutes)
- Naganohara-Kusatsuguchi Station → Park entrance (bus, about 40 minutes)
- Park entrance → Inside the park (on foot or by shuttle bus)
By car
- About 3 hours from Tokyo (via Kan-Etsu Expressway “Shibukawa-Ikaho IC” → Route 145)
- Free parking available (about 50 spaces)
Opening hours and admission
- Hours: 9:00–16:00 (may vary seasonally)
- Admission: Adults ¥500 / Children ¥300
Wi‑Fi
- Mobile signal is weak in many parts of the park, so it’s recommended to download maps in advance
- Free Wi‑Fi is available at nearby cafés and hot spring facilities
Language support
- Brochures available in English, Chinese, and Korean
- Some tourist information centers offer English assistance
Summary and Frequently Asked Questions
Chatsubomigoke Park lets you enjoy a rare moss landscape that grows in acidic environments—a truly unique natural spectacle in Japan.
The park’s seasonal scenery is beautiful, and it’s an easy spot to visit for a hiking-style outing.
Combining the visit with nearby hot spring towns makes for a great trip.
Frequently Asked Questions
Q: What season is best to visit?
A: Spring to autumn (April–November) is recommended—this is when the moss is most vibrant and the weather is stable. The park is closed in winter to the general public.
Q: What should I wear?
A: Wear comfortable clothes and sneakers. In winter, dress warmly.
Q: Can I enjoy the park on a rainy day?
A: Yes. The moss looks even more vivid when wet, so rainy days can produce particularly magical scenery.
Q: Are there places to eat inside the park?
A: There are no food facilities inside the park, so bringing a packed lunch is recommended.
Experience the extraordinary moss world created by Japan’s nature—why not visit Chatsubomigoke Park and see this otherworldly view for yourself?
