If you thought the “flat Earth” theory was the craziest conspiracy you’d hear about all year, think again.
Because there’s a growing community of people convinced the Earth is hollow, with a race of superior “alien” humans, Vikings and Nazis living in paradise at the center.
They even believe that flying saucers and UFOs come from within the interior Earth — sent from the highly evolved tribes to spy on us and prevent nuclear war.
Spearheading the bizarre movement is Rodney Cluff, author of “World Top Secret: Our Earth IS Hollow.”
He was so confident in the theory that he organized a 2007 voyage to the hollow Earth — with a plan to set off from Russia on an icebreaker ship to find an “opening” at the North Pole.
The $20,000-per-head expedition was canceled, but this in no way dampened his enthusiasm for the theory that flies in the face of modern scientific thinking.
He told SunOnline that the movement has exploded in popularity — with thousands subscribing to the idea of an inner sun and Earth.
“More and more people are coming to terms with the fact that the Earth is hollow. I get emails from people learning about it every day,” Cluff said.
“It’s definitely growing in popularity — certainly not in the millions but maybe in the thousands.”
So what does Cluff think of the loony rival theory that the Earth is flat?
“I don’t know how the flat-Earthers can be so confused,” he told SunOnline.
“They are obviously wrong. The world is not flat — it’s hollow. They reject all the evidence.”
Contrary to flat-Earthers, the hollow Earth movement believes the planet is a sphere — or more specifically, a “doughnut” shape.
And the theory does not just stop at our Earth — the group believes the moon, sun, stars and other planets are all hollow bodies.
There are thought to be three “substantial” openings into the inner Earth — two near the poles and one in the Himalayas.
Cluff believes the shell of the Earth is about 800 miles thick, from the outside to the inner surface.
“Suspended in the center of that hollow is an interior sun that is divided by day and night sides,” he says.
Those who claim to have traveled to the inner Earth have described the land as like the Garden of Eden.
Norwegian sailor Olaf Jansen claimed he sailed with his dad through an entrance to the Earth’s interior at the North Pole in 1811.
He told author Willis George Emerson how they lived in the beautiful paradise for two years.
“The city of ‘Eden’ is located in what seems to be a beautiful valley, yet, in fact, it is on the loftiest mountain plateau of the Inner Continent,” Jansen said.
He claimed the “superhumans” living there were at least 12 feet tall and never got ill.
As the hollow Earth theory has grown in popularity, so has speculation about the people apparently living in the center.
It’s now thought to be home to Nazis who escaped from World War II, the lost Viking colonies of Greenland and the lost tribes of Israel.
Cluff, who lives in Utah, says the “superior” human race living at the center of the Earth consider themselves “guardians of the planet.”
“They regularly spy on us using spacecrafts and flying saucers,” he said.
“They want to keep an eye on us and stop us from starting a nuclear war. The majority of UFOs actually come from inside our planet.”
Dianne Robbins, another hollow Earth theorist, says those living at the center have evolved to be immortal.
“They are physical humans like we are, but they live in peace, isolation and seclusion and through this, they have gained their immortality,” she says.
The telepathic communicator believes there are 100 subterranean cities, known as the Agartha network, at the center of the hollow Earth.
The hollow Earth theory has its origins in the belief systems of the ancient Greeks, Tibetan Buddhists and Christians.
In ancient times, the idea of underground realms often became associated with the afterlife.
The idea gained traction after 18th-century astronomer Edmond Halley argued that unusual compass readings could be explained by the fact that the planet was composed of a hollow shell.
He said they were two inner concentric shells and an innermost core.
The idea has been rejected by scientific research ever since.
Interest in the theory reignited in the 1940s when polar explorer Adm. Richard E. Byrd claimed he entered the inner Earth.
He also apparently found thriving civilizations on his 1920s trips and was once “attacked by flying saucers that burst out of the ocean and wiped out half of his fleet.”
The insane idea was once again thrust into the spotlight last year when conspiracy theorists claimed pictures proved NASA is hiding a huge hole leading directly to the center of the Earth.
Video footage revealed never-before-seen pictures of the alleged hole — which the US government apparently has covered up.
YouTube conspiracy theorists secureteam10 said: “Every single satellite image that we have of the North Pole shows a massive hole or a blackout hole put there to hide whatever’s underneath.”
Psychologist Jonathan Young said: “If we were to discover the other Earth, the place we have sought, the missing world — it would be profoundly humbling.”
“So this would be quite a paradigm shift. History would change in a very major way.”