This collision-proof drone helped explore the deepest ice cave in the world – Digital Trends

There is no shortage of stunning aerial photos to show what drones can do in the air. But drones can go in the other direction, too — and, in the process, help traverse some seriously challenging underground environments that would be extremely dangerous for humans to explore. Underground environments such as the worlds deepest ice caves, close to 1,000 feet below ground level on the Greenland ice sheet.
In a newly released video, Swisscom Ventures shows off a research expedition in which the S…

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