Is Nagatoro Valley accessible by public transportation?

Yes, Nagatoro Station is only a few minutes from the entrance to Iwadatami.

Are there any restrooms or facilities available in the valley?

Yes, there are restrooms and picnic areas for visitors to use.

Can we bring our food and drinks to enjoy in the valley?

Yes, you can bring your food and drinks. However, please dispose of trash properly and leave no trace behind.

Are pets allowed in Nagatoro Valley?

Yes, leashed pets are allowed in the valley.

Is there any recommended time to visit Nagatoro Valley?

Every season offers a unique and beautiful experience, but autumn is especially popular for its vibrant foliage. However, it can also get crowded, so consider visiting during weekdays or early mornings for a more peaceful experience. So, plan your visit based on what you want to see and do!

Saitama

Nagatoro Valley (Iwadatami)

4.2 (5396)Scenic SpotTourist AttractionPoint Of InterestEstablishment

Last updated May 2, 2026

Nagatoro Valley's Iwadatami, located in Saitama, is a hidden gem offering a stunning display of nature's artistry. The name "Iwadatami" comes from the rock formations that resemble layered tatami mats, creating a unique and beautiful landscape along the Arakawa River.

This area is designated as a Natural Park and offers a serene environment just minutes from Nagatoro Station. Visitors can stroll along the natural rock paths and steps, enjoying the picturesque scenery and the gentle sound of the river.

For those seeking more adventure, traditional wooden boat rides navigate the river's rapids, providing excitement and breathtaking views of the valley. The skillful boatmen enhance the experience with their expertise and engaging storytelling.

Nagatoro Valley is also a haven for nature enthusiasts and geology buffs, as it is recognized as the "Birthplace of Japanese Geology." The surrounding area features well-maintained promenades, making it easy to explore and appreciate the geological wonders and seasonal beauty, mainly the vibrant autumn foliage.

Plan your visit to Nagatoro Valley for a blend of tranquility and adventure. Enjoy the captivating rock formations, exciting river cruises, and the natural splendor that makes this destination truly special.

Hours

Open 24 hours

Closed

No closed days

Available

All year

Minimum Age

All ages are welcome.

Admission Fee

Free

Website

www.nagatoro.gr.jp

The area

Address

Nagatoro, Chichibu District, Saitama 369-1300, Japan

Website

www.nagatoro.gr.jp

What other travelers are saying about Nagatoro Valley (Iwadatami)

When you walk far away enough from the area everyone is in, it is a nice place to relax and watch some frogs. If you move the frogs will bury themselves underground, but if you stay very still, they'll emerge, and they are very cute. It seems you can ride boats here too, but it's just a nice place to walk along the river really.

Nearby attractions to see

A traditional Japanese Shinto shrine stands surrounded by trees. The ornate building features intricate wooden carvings, a curved roof, and stone lanterns, with a red umbrella and offerings visible to the right.

Hodosan Shrine

A modern shopping mall with a large arched glass entrance and a curved white facade labeled "Cocoon 2," under a clear blue sky, with trees and plants near the front.

Cocoon City

Two people in traditional clothing adjust rows of illuminated red paper lanterns with bold black kanji characters, creating a vibrant display at a festival or cultural event.

Kuki Lantern Festival (Tennousama)

A vibrant red and gold Japanese temple gate stands among tall green trees, flanked by two fox statues on stone pedestals, with intricate carvings and Japanese characters above the entrance.

Mitsumine Shrine

Nearby attractions to see

Hodosan Shrine

Cocoon City

Kuki Lantern Festival (Tennousama)

Mitsumine Shrine

More about Nagatoro Valley (Iwadatami) from our blog

Frequently Asked Questions

Stunning during autumn. A nice, relaxing scenic walk in the cool breeze. You should definitely visit here if you’re in Tokyo or the nearby area in autumn.

Khanh Linh Nguyen

Nov 29, 2025

It was worth it , must visit this place for peace of mind and to enjoy the beauty of nature .

Ashim Bhattarai

Dec 30, 2025

It is an unusual terrain with a series of huge rock formations. There are many people near the boat pier, but as you move away from that area, the number of people decreases. It is a very relaxing place rich in nature. The kids enjoyed their rocky adventure. We can find many tadpoles and frogs here. The view of the boats on the river is also beautiful. The boats are very popular and you may have to wait in line for quite a while to get tickets.