Nasa accidentally discovers abandoned city buried under ice in Greenland

According to Nasa, the radar imagery shows the city 'like never before'.

The image re-discovered the city 58 years after it was abandoned as a US base during the Cold War.

'Camp Century', built in 1959, was officially built to test sub-ice construction techniques, however the real 'top secret' plan was to create a hidden launch site for ballistic missiles to reach the Soviet Union.

Ice began to crush the site, which could have expanded to 33 bases.

In April of this year, NASA scientist Chad Greene, with the help of agency expert Alex Gardner, flew over Greenland to map ice sheets and estimate future sea level rise.

Describing how their radar identified the base, he explained: "We were looking for the bed of the ice and out pops Camp Century.

"We didn't know what it was at first," Mr Gardner added.

Despite the presence of the base having been known, the new mapping shows structures 'in a way that they've never been seen before'.

The US left behind an estimated 200,000 litres of diesel oil and sewage, something that has caused a row over the clean-up.

Greenland has previously called on Denmark, the owners of the land, to take responsibly of the land since they originally agreed the deal.