A former CIA 'spy' has broken his silence about his experience as a 'remote viewer,' claiming he uncovered there was once life on Mars.

The CIA conducted experiments in the 1980s with Joe McMoneagle and other individuals who claimed they could perceive information about distant objects, events or other people using their minds.

McMoneagle, the CIA’s Remote Viewer No. 1, spoke on the American Alchemy podcast Friday, detailing how he was given coordinates and asked to describe what he saw at the location.

He said he spotted a giant pyramid, larger than Egypt's Great Pyramid of Giza, which had 'monster rooms inside.'

'I started getting an image of human beings that were trapped in a place where the atmosphere was turning bad,' said McMoneagle. 'It [was] obvious these people were dying for some reason, but they were humans. They were just twice our size.'

An instructor handed him a white card with the target on it, showing: 'Mars 1,000,000 BC.'

McMoneagle later stormed into NASA's Jet Propulsion Laboratory to obtain negative images of the targets he was asked to remote view, finding photographs of bones and buildings on the Martian landscape.

He theorized a 'big object passed through our solar system' that stripped the atmosphere from Mars, causing the extinction of life on the Red Planet.

McMoneagle is a retired US Army Chief Warrant Officer turned CIA psychic. He and five other remote viewers saved 52 Americans seized in November 1979 in the Iran hostage crisis by spying on the Iranian captors.

He was part of the CIA's Project Stargate that was the US government's new weapon against the Soviet Union, which aimed to create mind-reading spies who could infiltrate the minds of its enemies.

The CIA declassified a document in 2017 called 'Mars Exploration May 22, 1984' and it was revealed on the podcast that McMoneagle was the test subject.

The report states an envelope was provided to McMoneagle before the interview but was not opened until afterward.

'In the envelope was a 3x5 card with the following information: The Planet Mars. Time of interest approximately one million BC,' the document reads.

The administrator of the experiment verbally relayed the envelope contents and allowed the subject to provide their observations. The starting time was 10:09 a.m. ET.

McMoneagle was asked to focus his attention on '40.89 degrees north, 9.55 degrees west.'

'It sort of looks... I kind of got an oblique view of a... pyramid or pyramid form,' McMoneagle said.

The remove viewer observed shadows of 'very tall, thin' people wearing strange clothing in one place and then saw a violent storm was ripping through Mars, and people were using the giant pyramids for shelter.

'Different chambers... but they're almost stripped of any kind of... furnishing or anything. It's like ah... strictly functional, a place for sleeping—or that's not a good word—hibernation, some form,' McMoneagle said.

McMoneagle told Michels that the people were inside the pyramid until help came to rescue them.

'The whole time I thought I was on Earth and it was a new discovery,' he said.

When he learned the target was Mars, McMoneagle was livid.

'I hate doing a target where I cannot prove ground truth because then I don't know if it's real or I'm inventing it,' he said.

'I can't actually sit there and say this is exactly 100 percent correct.'

McMoneagle went straight to NASA, demanding negatives of the coordinates he was given during the experiments and showed a 'guy at the counter' the coordinates he was given.

'Oh, this is the old city on Mars,' the man at the counter told him.

McMoneagle was given negatives of the Martian landscape, showing a pyramid-shaped structure on the edge of a giant impact crater.

And when asked how he knew it was manmade, McMoneagle explained that it was created after the impact occurred.

'If it was there [before], it would have been blown away,' he told Michels. 

McMoneagle also claimed that when NASA 'first clocked' a structure on Mars there was a red light coming from it. 

'They're not hiding [this information], they're just not talking about it,' McMoneagle said.

The 1984 CIA document continued to explain McMoneagle's observations of the 'ancient people .'

'It's past their time or age,' he told the instructor.

'They're very philosophic about it. They're looking for ah... a way to survive, and they just can't.'

McMoneagle then discussed a conversation he was having with one of these people who told him that a group had left in what 'looks like the inside of a larger boat.'

The administrator told him to go along on the journey and report what they saw.

'Impression of a really crazy place with volcanoes and gas pockets and strange plants—a very volatile place. It's very much like going from the frying pan into the fire,' McMoneagle said.

'The difference is there seems to be a lot of vegetation where the other place did not have it. And a different kind of storm.'

The administrator then told the McMoneagle it was time to come back, ending the remote viewing.