To build the foundation for these works, the Corps had to pour an 8-foot-thick concrete foundation underwater in the middle of one of the busiest shipping lanes in the world.
The MM600 is double-sided mat designed with foundation of a solid piece of 3mm thick aircraft-grade aluminum to provide a flatter, more rigid surface and no-slip rubber corners to minimize slippage during frenzied gaming sessions.
From a research station operated by the National Science Foundation called Summit Camp, a spot where the ice sheet is about 2 miles thick, GROVER will crawl at an average speed of 1.2 mph (2 kilometers per hour).