An Underwater Robot has snapped photographs of a pottery urn probably dating from the seventh or eighth century that has been left almost intact at the bottom of Lake Biwako. An ancient jar, photographed by an underwater robot, at the bottom of Lake Biwako  in Shiga Prefecture [Credit: Ritsumeikan University]The jar, which was spotted 71.5 meters down on the bed of the lake, is 30-40 centimeters in height with a 20-cm opening,...

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