Chosen as one of the "Japan's Top 100 Hiking Trails", the promenade for leisurely strolling to enjoy landscape in different four seasons. The best hiking course in spring cherry blossom season and autumn colored leaves seasons. 81-meters long “Rainbow Lake Tunnel” is in the middle of the hiking trail. At the both ends of the tunnel, you can enjoy panorama view of Ono village. It is locals’ recommended prime viewing spot.