The Church of Scientology may have an "alien space cathedral" in the New Mexico desert.

The information was first reported by BBC's John Sweeney in his new book, "Church of Fear: Inside the Weird World of Scientology," and excerpts taken from the book were published by The Sun.

The New Mexico site, reportedly known as Trementina Base, was visited by Sweeney along with former Scientologist Marc Headley in the course of researching for his book. The installation is allegedly marked by a crop circle-type symbol that was designed to be seen from space.

The symbol comprises of two interlocking circles with each having a large diamond shape inside, according to Sweeney. The design was created as markers to guide Church of Scientology members home once the earth is safe following a nuclear Armageddon.

In his book, Sweeney said that the church was built in the 1980s as a huge underground "alien space cathedral."

Sweeney wrote the following: "Its vault houses the lectures of church founder L Ron Hubbard on gold discs locked in titanium caskets sealed with argon. The cathedral is H-bomb proof, protected by three 5,000lb stainless steel airlocks."

While he may have a large claim, Sweeny defended his argument with the large design that marks the spot.

"If I'm wrong about the church believing in aliens, then why have they built these giant symbols in the middle of the desert that can only be seen from outer space," said Sweeney, according to The Raw Story.

Sweeney also previously reported on Scientology in a 2007 investigation for BBC One's Panorama, a "60 Minutes"-style program in Britain, according to New York Daily News.

The controversial Church of Scientology was founded in 1952 by writer L. Ron Hubbard and promotes the concept that humans are immortal beings with reincarnated souls. The church boasts celebrity members such as Tom Cruise, John Travolta, Kirstie Alley and Juliette Lewis.