Walk through the rock wall tunnel said to have been hand-carved by the monk Zenkai
About this spot
A road tunnel of the oldest grade in Japan, said to have been hand-carved by the monk Zenkai over more than 30 years during the Edo period. The rock wall path, still bearing chisel marks, conveys the weight of history and, combined with the clear waters of the Yamakuni River flowing beside it, creates beautiful gorge scenery. It is also known as the setting for Kanpai Kikuchi's novel "Beyond the Grudge" (Onshū no Kanata ni), making it a recommended spot for history-loving families. The appeal lies in the ability to see the texture of the rock face up close while walking.
Fireworks details
Name: 鶴市花傘鉾祭花火大会
Date & time: 8/23 (Sun) Time TBA
Venue: 三口山国川河川敷
Shells: approx. 3,000
2026年8月23日(日)開催、三口の山国川河川敷を会場にした鶴市花傘鉾祭花火大会のクライマックスです。約3,000発の花火が山国川の夜空を彩り、渓谷特有の地形によって打ち上げの音が響き渡る迫力ある光景が広がります。昼間めぐった青の洞門や羅漢寺の渓谷美とあわせて、耶馬渓の自然と花火をよくばりに楽しめる特別な夜になります。
Tips
荒天時は中止や延期の可能性があるため、当日は中津市の公式発表を確認しましょう。終了後は道路が混み合うため、少し時間を置いてから帰路につくのがおすすめです。河川敷は足元が暗いので懐中電灯やスマホのライトを準備しておくと安心です。
Food stalls
Food stalls: Yes
※WalkerPlus 2026年開催情報(8/23)に「会場内には屋台も立ち並ぶ」と記載。. Stall lineups change year to year. Please check the official site for the latest details.
Turn this into a day plan with stall time includedTips
From the parking lot, walk a short distance along the walking path to the tunnel entrance. Your feet may get wet, so comfortable walking shoes are recommended. In summer, there are sections with little shade, so be sure to bring water for hydration.
Best time to visit
Duration: approximately 1 hour. From late morning through early afternoon it is relatively cool and easy to walk.
Access & map
〒871-0202 Oita Prefecture, Nakatsu City, Honyabakei Town, Soki
Model course featuring this spot

2026 Tsurushi Hanagasa Hoko Festival Fireworks Grand Celebration - Full Day Course
Oita
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