130m Long 'Forest Resort Pool' Lac Léman Pool Grand Opening on June 5th (Fri)!

The onsen glamping area 'Grandvaux Spa Village' at the experiential resort facility 'Sport & Do Resort Resol no Mori' (Nagara-machi, Chiba; President: Shigehito Saji) will open the 130m long 'Lac Léman Pool' exclusively for guests from June 5th (Fri) to September 23rd (Wed), 2026.

*Open only on Fri, Sat, and Sun until June 28th. Daily operations start from June 29th (Mon).

The popular night pool will be open every Saturday from July 18th to August 29th, as well as on July 19th (Sun) and during the Obon period from August 8th (Sat) to August 15th (Sat). Furthermore, from the 2026 season, the night pool will be available free of charge for guests.

The popular summer activity 'SUP Cruising' will be offered again for a limited time. The summer festival event 'Grandvaux Bon Dance,' featuring Bon dancing and fireworks, will be held for four days this year!

The 130m 'Lac Léman Pool,' modeled after Lake Geneva in Switzerland, is a large outdoor pool exclusive to guests. It consists of three areas: a resort-style swimming zone, a 3.5m deep diving spot, and a toddler pool (50cm deep) perfect for a pool debut, allowing the whole family to enjoy. Paid seating is also available for those who want to relax. The 2026 season will open on June 5th (Fri), earlier than last year.

As a popular summer activity, 'SUP Cruising'—a new standard in water sports—will be offered for a limited time. A 'BIG SUP' that can accommodate up to six people is also available.

In the popular night pool, the water surface glows under the lights, leading you into a mystical night and offering a luxury experience different from the daytime.

Additionally, the summer festival 'Grandvaux Bon Dance,' where you can enjoy a 'Japanese summer' with Bon dancing and fireworks, will be held on July 19th (Sun), August 9th (Sun), August 22nd (Sat), and August 29th (Sat). In addition to performances by Bon dance entertainers and dancing together in a circle by the poolside, the finale will feature colorful fireworks coloring the summer night sky.

[Overview of Lac Léman Pool] Daytime (9:30-17:00): June 5th (Fri) to September 23rd (Wed), 2026 Nighttime (19:00-21:00): Saturdays from July 18th to August 29th, July 19th (Sun), and Obon period (Aug 8th-15th). *Open only on Fri, Sat, Sun until June 28th. Daily from June 29th. Price: Free (Exclusive to overnight guests). Details: https://www.resol-no-mori.com/recommend/kiji84.html

[Summer Festival 'Grandvaux Bon Dance' Overview] Dates: July 19 (Sun), Aug 9 (Sun), Aug 22 (Sat), Aug 29 (Sat), 2026 Time: 19:00~ Bon Dance, 19:30~ Fireworks Location: Lac Léman Pool

[Handheld Fireworks Store 'RESOL no MORI Hanabi-ya' Open for Summer!] You can choose your favorite designs and number of handheld fireworks. Enjoy the summer atmosphere with sparkling sparks in the quiet of the forest without worrying about cleanup.