Ganmon Gate Rock is perhaps the most famous sight on the Noto Kongo Coast. From a nearby boat dock, see it by boat. Erosion by waves created this tunnel-like rock measuring 15 meters high, 6 meters wide, and 60 meters long. 巌門
Boat cruises for Ganmon Rock costs ¥1,200. Takes only 20 min.
http://www.ganmon.jp/