Archaeologists used machetes to hack their way to the rock structures covered with Nazi symbols. In the ruins they discovered German coins from the 1930s, and pieces of porcelain stamped with "Made in Germany."

"We can find no other explanation as to why anyone would build these structures,” team leader Daniel Schavelzon told Clarin.

Schavelon said construction took “great effort and expense, in a site which at that time was totally inaccessible, away from the local community, with material which is not typical of the regional architecture."

Searchers believe the site was built to protect and hide Nazi leaders in if they were forced to escape Germany.

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"Apparently, halfway through the Second World War, the Nazis had a secret project of building shelters for top leaders in the event of defeat,” Schavelzon told the paper.

They were “inaccessible sites, in the middle of deserts, in the mountains, on a cliff or in the middle of the jungle like this."

"This site also has the bonus of allowing the inhabitants to be in Paraguay in less than 10 minutes,” he concluded.

Thanks to the friendly regime of President Juan Peron, it’s believed more than 5,000 Nazis fled to Argentina in the years after the war.

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