DescriptionOkinawa trench and Okinawa trough topographic.png English: Map of the Okinawa Trench (a trench off Ryukyu Islands) (Red Line) and Okiniwa Trough
DescriptionIzu-Ogasawara trenchtopographic.png Map of the Izu-Okasawara(Izu-Bonin) Trench(a trench near the east of Izu Islands and Okasawara(Bonin) Islands)