Historic tunnel reportedly hand-carved by the Buddhist monk Zenkai
About this spot
A historic site where the Buddhist monk Zenkai is said to have spent approximately 30 years hand-carving with only pickaxes and chisels during the Edo period, and is also considered the beginning of Japan's road tunnels. Known as the setting for Kankichi Kikuchi's novel 'Beyond Hatred', the hand-carved marks from that era remain on the tunnel's walls today. The scenic landscape woven by the clear waters of the Yamakuni River flowing beside the tunnel and the sheer rock cliffs is a sight to behold unique to Yamakei. It's a walking spot where you can experience history while enjoying the cool, refreshing air of the valley.
Fireworks details
Name: 宮園楽（かっぱ祭り）
Date & time: 7/29 (Wed) Time TBA
Venue: 中津市山国町・雲八幡神社
山国川上流の山あいに鎮座する雲八幡神社で、2026年7月29日に行われる「宮園楽」は、地域で「かっぱ祭り」とも呼ばれ長く受け継がれてきた民俗芸能の奉納行事です。太鼓や笛の音にあわせて奉納される「楽」は、山国町の人々が大切に守り伝えてきた郷土芸能で、耶馬渓の豊かな自然を背景に厳かな雰囲気の中で行われます。都市部の華やかな夏祭りとは異なり、地域の歴史と信仰に根ざした静かな祭りの空気を家族で味わえる貴重な機会です。
Tips
開催時間や内容は年によって変わることがあるため、事前の情報確認がおすすめです。山あいのため夜は虫が多いことがあり、虫よけを持参すると安心です。足元が暗くなるため、懐中電灯があると安心です。
Tips
The tunnel floor can be wet in places, so it's recommended to wear comfortable walking shoes. Even in summer, the area along the valley is relatively cool.
Best time to visit
About 40 minutes. Early afternoon hours are relatively uncrowded and easier for sightseeing.
Access & map
871-0202 Oita Prefecture, Nakatsu City, Honeyabakei Town, Sogi
Model course featuring this spot
2026 Miyanoen Gaku (Kappa Festival) Full-Day Immersion Course
Oita
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