The near-perfect cross was photographed by Mechaele Loraffe of Buchanan, Michigan, who could not resist pulling over to snap a gorgeous sunset as she drove to work.

But it was only when she checked back at the picture that the amazing cross became apparent.

After she posted the shock snap on Facebook it went viral and has since ended up on various conspiracy, religious and even UFO websites.

Suggestions for what it was ranged from a sign from God before the rapture, an amazing trick of the light, and even proof of aliens.