Located in the loose slope, south of Kompira mountain. 1km away from Oku-yashiki village in Mine city Okumakura to the southeast.

Iwago is the name for groups of huge rocks piled up, also called "Gankai　（rock sea)".

Larger rocks and area of gankai than the rock groups in Kibe Oiwago.

Visited by many people for the academically rare plants and sea weeds.