PHOTO: Divers find deep cavern in Japan's longest underwater cave - AJW by The Asahi Shimbun | All about water, the oceans, environmental issues | Scoop.it
BUNGO-ONO, Oita Prefecture--Divers have discovered a cavern of great proportions within the Inazumi Underwater Stalactite Cave here in southwestern Japan, believed to be the longest of its kind in the country.