[Image1]Oita Bungoono Outing Information❚ Inazumi Underwater Cave Sightseeing BoatAt Inazumi Underwater Cave
[Image2]Oita Bungoono Outing Information❚ Inazumi Underwater Cave Sightseeing BoatAt Inazumi Underwater Cave
[Image3]Oita Bungoono Outing Information❚ Inazumi Underwater Cave Sightseeing BoatAt Inazumi Underwater Cave
[Image4]Oita Bungoono Outing Information❚ Inazumi Underwater Cave Sightseeing BoatAt Inazumi Underwater Cave
[Image5]Oita Bungoono Outing Information❚ Inazumi Underwater Cave Sightseeing BoatAt Inazumi Underwater Cave
[Image6]Oita Bungoono Outing Information❚ Inazumi Underwater Cave Sightseeing BoatAt Inazumi Underwater Cave
[Image7]Oita Bungoono Outing Information❚ Inazumi Underwater Cave Sightseeing BoatAt Inazumi Underwater Cave
[Image8]Oita Bungoono Outing Information❚ Inazumi Underwater Cave Sightseeing BoatAt Inazumi Underwater Cave

Oita Bungoono Outing Information
❚ Inazumi Underwater Cave Sightseeing Boat
At Inazumi Underwater Cave in Bungoono City, Oita Prefecture, you can enjoy an experience of the underwater cave and hotaru river sightseeing boat.
The cave maintains a temperature of about 16℃ year-round. A tranquility that seems to leave behind the summer heat envelops you, allowing you to leisurely feel the charm of the cave submerged in water. It is said that Inazumi Underwater Cave was formed over approximately 200 million years and was submerged during the great eruption of Aso Mountain about 85,000 years ago. You can slowly enjoy the depth that cannot be touched just by walking around from the boat. The sightseeing boat proceeds under the guidance of staff, taking about 10 minutes. While listening to the formation and highlights of the cave, you will tour the cave from the water's perspective. Why not try experiencing the quiet time that spreads at the bottom of the cave?

【Location】Inazumi Underwater Cave (300 Nakatsuduru, Mie Town, Bungoono City, Oita Prefecture)
【Fee】Sightseeing boat 2,500 yen (entrance fee required separately)
【Capacity】3 adults
【Access】About 60 minutes by car from Mera Interchange on the Oita Expressway
About 20 minutes by car from Mie Town Station on the JR Houhi Main Line
【Parking】Available
【Contact】Inazumi Underwater Cave TEL: 0974-26-2468
【Notes】No changing necessary. Please check the operation status on the day in advance.

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The 8th Bungo Buono Station Front Marche ❚ Held on August 22, 2026 Enjoy the "delicious" and "wonderful" offerings of Bungo-Ono to the fullest at this marche! The "8th Station Front Marche" will take place at Mie Town Station Square. The venue will feature food booths offering coffee, sweets, and light meals, as well as fun booths including a game corner, free ride experiences, and a light truck sauna. Stage events will include taiko drumming, kagura performances, hula, and kids' dance. At the end of the event, there will be a lottery and mochi throwing. Enjoy a delightful evening from summer dusk to night with food, sights, and fun at the venue. 【Date】Saturday, August 22, 2026, from 5:00 PM to 8:30 PM, held rain or shine *The event may be canceled in case of severe weather. Please check the event's website after 3:00 PM the day before for confirmation of the event. 【Venue】Mie Town Station Square (2998-2 Akamine, Mie Town, Bungo-Ono City, Oita Prefecture) ■Stage Events 5:00 PM – 5:10 PM Opening Ceremony & First Mochi Throwing 5:15 PM – 5:35 PM Saijō-ji Children's Taiko 5:40 PM – 6:00 PM ALOHA Ukulele 6:10 PM – 6:40 PM Itaizako Shinmeisha Shrine Kagura 6:50 PM – 7:10 PM Daishin Taiko 7:20 PM – 7:40 PM Ohana Hula 7:45 PM – 8:15 PM Kids Dance "ROⓂD" 8:20 PM – 8:30 PM Lottery & Closing Ceremony & Second Mochi Throwing ■Fun Booths Night Market Corner (Game Corner) Free Ride Experience Light Truck Sauna (No need to bring anything) ■Venue Booths Cafe Param Antiques Imo no Chikara-ya Vintage Clothing Disco Nikoniko Chiffon Gochisou Kumogakure Melissa Cafe Nagomi Coffee Toko's Kitchen Pizza Buono *Even if the stage is canceled due to rain, food booths may still operate at the venue. ■Other Please note that the content listed may change due to unavoidable circumstances. Parking is available at the Bungo-Ono City Chamber of Commerce, Oita Bank, and Bungo-Ono City Hall. Due to expected congestion and full parking, we encourage the use of public transportation or walking to the venue. For accessible parking, please speak to the staff at the venue. ■Contact Information Bungo-Ono City Tourism Association TEL: 0974-27-4215 ■■Access from Fukuoka and Kumamoto to the center of Bungo-Ono City■■■ Approximately 3 hours by car from JR Hakata Station in Fukuoka Approximately 2 hours by car from JR Kumamoto Station Approximately 1 hour and 20 minutes by car from JR Beppu Station in Oita Approximately 1 hour and 20 minutes by car from JR Yufuin Station in Oita ■■■■■■■■■■■■ Introducing tourist attractions and recommended spots in Bungo-Ono City, Oita Prefecture ■■■■■■■■■■■■