Pit-Road Skywave J77 JMSDF Destroyer DDH-144 | PlazaJapan,Capturing the Rivers of Hokkaido!]Aotora Stone | かわたびほっかいどう,A Journey into the History of Rivers and Watersides ◇Water Transport and Rivers in Hokkaido]The Ishikari River, a Major Artery That Supported the Economy and Culture of Central Hokkaido. | かわたびほっかいどう,Home | Kawasaki Kisen Kaisha, Ltd.,Capturing the Rivers of Hokkaido!]Aotora Stone | かわたびほっかいどう