Caves played a prominent role in the death of Jesus Christ – the Bible reads he was resurrected after being placed inside a tomb.
And many biblical sites, such as the Church of Nativity, the Mount of Olives and the church of the Holy Sepulchre were all located upon caves.
Author Kathleen McGowan Coppens – speaking on BLAZE series Ancient Aliens – said this all points to their spiritual importance.
“There does seem to be a mystical environment here, this idea of a cave being a place where someone who is of divinity comes and someone of divinity leaves, so it’s as if passages were happening in the caves,” she says in the latest episode.
Kathleen even suggests there is physical evidence of the cave’s spiritual nature, in the Turin Shroud.
The piece of cloth is believed by some to be the burial shroud that Jesus was wrapped in when he was buried after the crucifixion, due to a negative image of a man being seen on it.
And that image, Kathleen maintains, could not have been created unless “something powerful happened in that tomb”.
Fellow conspiracy theorist Michael Mott agrees in the episode, adding that a “burst of radiation” caused the Turin Shroud.
But another bold claim is then made.
William Henry, author of The Secret of Sion says: “It’s possible that that cave was acting as a gateway or portal.
“Because in many of these stories, caves link Earth and Heaven.”
Experts have been debating for years the veracity of the Turin Shroud.
Many scientists have dismissed it as a forgery, claiming radiocarbon dating puts it only as old as the 14th century – 1400 years after Jesus is said to have been executed in Jerusalem.
But scholar David Rolfe has said some details are too precise to be faked.
New episodes of Ancient Aliens are on free to air channel BLAZE every Wednesday at 9pm Freeview Channel 63.