|Yabakei Region is a part of Yaba-Hita-Hikosan Quasi-National
Park located in Nakatsu-city, Oita-prefecture.
A grand gorge created through a lava plateau of the largest
scale in Japan by the flow of Yamakuni-gawa River.
Extending 36 km east and west and 32 km north and south,
this huge gorge full of strange-shape rocks and stones is a