Expedition to hollow earth

From the you can't make this stuff up department:

A U.S. scientist and a small band of believers are planning a journey to the Canadian Arctic for what they call "the greatest geological expedition in history."

Are they searching for Arctic oil reserves? Documenting evidence of climate change?

Not quite. They're looking for a fog-shrouded hole in the Arctic Ocean that leads -- they say -- to the centre of the Earth, where an unknown civilization is lurking inside the hollow core of the planet.

This time next year, Kentucky based physicist and futurist Brooks Agnew hopes to board the commercially owned Russian icebreaker Yamal in the port of Murmansk, and to sail into the polar sea just beyond Canada's Arctic islands.

"Everest has been climbed a hundred times," Mr. Agnew says. "The Titanic has been scanned from stem to stern. [But] this is the first and only expedition to the North Pole opening ever attempted."

Mr. Agnew is the latest in a long line of people to peddle the nutty, yet persistent, theory that humans live on the surface of a hollow planet, in which two undiscovered openings, near the North and South poles, connect the outer Earth with an interior realm.

In the 17th century, English astronomer and mathematician Sir Edmond Halley, who calculated the orbit of Halley's Comet, advanced hollow-Earth theories, as did German scientist Athanasius Kircher.

More recently the myth has experienced a slight revival, thanks in part to a 2006 book, by American author David Standish, titled Hollow Earth: The long and curious history of imagining strange lands, fantastical creatures, advanced civilizations, and marvellous machines below the Earth's surface.