The US Army secretly started constructing a massive nuclear missile base in Greenland. Three years into the construction everything was halted and evacuated in 1965, with the discovery the entire glacier would shift in two years.
Within three years after it was excavated, ice core samples taken by geologists working at Camp Century demonstrated that the glacier was moving much faster than anticipated and would destroy the tunnels and planned launch stations in about two years. The facility was evacuated in 1965, and the nuclear generator removed. Project Iceworm was canceled, and Camp Century closed in 1966.@Curionic
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