Okayama "Yamanori Valley Somen-nagashi Ryozui-tei" is open for business, The menu has been expanded and the season will start this spring!
Enjoy the mystical valley and our specialties. Special promotions with neighboring facilities are also available.
一般社団法人アシタカ
ASHITAKA (located in Hiruzen, Maniwa City, Okayama Prefecture; Representative: Naoto Akagi), a general incorporated association that conducts projects using local resources for the purpose of regional promotion, will expand the period of operation of the "Yamanori Gorge Somen Nagashi Ryosuitei" (Somen Noodle Flow in the Yamanori Valley), which has attracted many visitors since its reopening two years ago, from April through September 27 this year.
Please visit our website for the latest information and menu.
Yamanori Gorge Somen Nagashi Ryozuitei
URL: http://www.ryosuitei.ashitaka.or.jp/

Interior view of Ryozuitei
Store Features
~A special time in a mysterious valley
The "Sanjo Valley" is surrounded by huge rocks that look like a landscape painting. Ryosuitei is located in such a valley. If you continue along the promenade, you will come to "Fudo Falls," which is overflowing with negative ions. Even in mid-summer, the temperature in the valley is 21℃. It is a perfect place for sightseeing during summer vacation.

Exterior view of Ryosuitei
~We are particular about the taste of our noodles.
The noodles are thin and smooth, and the dipping sauce is specially made thick and sweet. Other ingredients are locally produced, and the restaurant is particular about not only the atmosphere but also the taste.

Soumen-nagashi
~A new menu item that is a must-try!
We offer a variety of menu items that can only be found here, such as "Hiruzen Yakisoba," which has won the top prize in Japan for local gourmet cuisine, "Iburi Koko (Gako)," which the owner himself trained in Yokote City, Akita Prefecture and produces locally, and special somen noodles made by kneading specialty kuromoji (a black maple) into Okayama-grown wheat. *Kuromoji Somen will be available from June.
Example of menu *Tax included
Nagashi Somen: 800 yen (Banshu hand-pulled Somen noodles with special sauce)
Hiruzen yakisoba: 800 yen (local delicacy that won the top prize in Japan, served with special sauce)
Grilled amago with salt: 700 yen (amago raised by a local fishing cooperative)
Onigiri (rice balls): 400 yen (rice from the local village)
Kuromoji tea: 300 yen (tea made from wild Kuromoji trees in the area)
etc. (tea made from local wild black locust)

Kuromoji tea

Example of menu

Iburi kouko (pickled ginger)
■Nearby Spots
Within a 10-minute drive, there are many spots to enjoy your summer vacation, such as a day spa facility heated by local firewood and an aerial athletic park in a forest space, "Boukennomori Hiruzen.

Boukennomori Hiruzen Children's Course
■Spring Special Campaign
Customers who make a reservation for (experience) the aerial athletic park "BOUKENNOMORI Hiruzen" during the following campaign period will receive a free drink of their choice per person when dining at Ryosuitei.
~Reservation (trial) period
Customers who experience or make reservations between April and the end of June 2026.
~Ryozui-Tei usage period
Ryosuitei open until July 31, 2026.
The date of use of the Ryozui-Tei can be before, on, or after the Boken-no Mori Hiruzen experience.
Please have your reservation completion screen, reservation completion e-mail, or accounting receipt from the experience ready.

Boken-no-mori Hiruzen Adult Course
Outline of the store
Store Name : Yamanori Gorge Somen-nagashi Ryosuitei
Opening days : (1)Saturdays, Sundays, and holidays from April to June 21
(2)Every day except Tuesdays from June 22 to September 27
Business hours: 10:00 - 15:00 (last admission at 14:30) during (1), but until 16:00 during GW
(2) 10:00 - 16:00 (last admission at 15:30)
Closed: Weekdays during (1)
Tuesdays during (2) (open on August 4, 11, 18, and September 22)
Location: 2096, Hiruzen Shimowa, Hiruzen, Maniwa City, Okayama Prefecture 717-0513
Access: 20 min. drive from Yubara IC on Yonago Expressway
Number of Seats: 5 lanes of Somen-nagashi (maximum 8 people per lane)
Self-serve Somen-nagashi lanes x 2 (5-10 people per lane)
Table seating x 4 (max. 4 people per table) *Pets are allowed
URL : http://www.ryosuitei.ashitaka.or.jp/

Iburi Koko production scene
Company Profile
Company name: Ashitaka General Incorporated Association
Representative: Naoto Akagi, Representative Director
Location: 1080-1 Hiruzen Shimowa, Hiruzen, Maniwa-shi, Okayama 717-0513
Establishment : May 2015
Business description: Developing business using local resources for the purpose of regional development
(firewood production, essential oil production, food production, outdoor park management, immigrant housing management, etc.)
For inquiries from customers regarding this matter, please contact
There is no store phone for this business, so please check our website, etc.
- Category:
- Services