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+ - Robotic submarine maps worlds deepest sinkhole

Submitted by holy_calamity
holy_calamity (872269) writes "The world's deepest water-filled sinkhole has finally been mapped — by a robotic submarine who's descendants may swim on one of Jupiter's moons. The last attempt to find the bottom yielded the SCUBA diving depth record and the death of a diving legend. The sub's SONAR found that the divers were about 10m from the floor, and that the sinkhole which is over 300m deep could be connected to even deeper caves."

Always leave room to add an explanation if it doesn't work out.