summer in akiyoshidai karst plateau

akiyoshi akiyoshidai architectural asia attractive august beautiful beauty cenote countryside cover daytime destination doline earth element footpath geology grass grassland grassy gray green hiking hill hillsides honshu japan japans karst landscape largest limestone meadow mine national natural nature outdoor park path pinnacle pinnacles plateau prairie prefecture pretty quasinational rock rural scenery scenic science sinkhole stone summer tourist trail tranquility view wilderness yamaguchi