Anatsuiso is a huge rock with three gate opened for sea. It is locate Goishi Beach, Ofunato, Iwate prefecture. Goishi Beach is Ria Coast with many valley, rocks, gates and caves.
There is a boat service to go into those tunnels.
Anatsuiso (穴通磯) is the rock gates located in Ofunato, Iwate Prefecture. There are three gates in the huge rock that is located in Goishi Beach. It is one of the popular scenery of Ofunato.
Tourist Info.
There is parking and restroom.
Access
0. at Ofunato Station.
1. use local bus to Goishikaigan.
20 min
New Wave Samurai Movie. 
映画好き集まれ！ 
Anatsuiso is a huge rock with three gate opened for sea. It is locate Goishi Beach, Ofunato, Iwate prefecture. Goishi Beach is Ria Coast with many valley, rocks, gates and caves.
There is a boat service to go into those tunnels.