This road route follows a river up to Naguri Dam. You can ride one or both ways if you have a foldable bike because there is a bus service from Hanno Station (#01-1). The main road on the north side of the river is narrow and busy, so I prefer using the southern road where it exists. Japanese drivers are very considerate though. There are toilets, camping, picnic and rest spots along the way. The upper part of the valley is very scenic. There are vending machines along the route, as well as some nice places to eat along the river, evident if you follow the main (north) road up the valley.by Shouganai