A mysterious ancient doorway found in the Grand Canyon could be a hiding place for aliens.
A secret alien door has been found on the Grand Canyon
Extraterrestrial enthusiasts have had their attention grabbed after Wayne Wells came across an unexplained black hole in the famous American landmark on Google Earth.
Wells and other experts believe that the site is Egyptian but others are convinced that it is Martian.
He said: "Quite an amazing discovery. Ancient ruins I found in the Grand Canyon in Arizona. Fantastic."
Wells claimed that further exploration should be conducted to prove whether the secret door is a path left by little green men.
He said: "It'd be easy for somebody to send a drone over the edge to check these ancient ruins out. Some kind of tunnel."
Dina De Cortez claimed: "Not many people know about Cleopatra's son running away with a lot of gold. Some people think he ended up at the Grand Canyon."