A 38-year-old Plodviv, Bulgaria, resident discovered a skull buried near a narrow, oval-shaped metal disk.

According to the individual, he was guided in his nightmares by five weird humanoids clad in yellow metallic costumes. These beings have showed the man a location in the Rhodope Mountains.

The skull sparked tremendous interest among ufologists and conspiracy theorists since it was thought to be incontrovertible proof of the presence of alien creatures on Earth. The skull was investigated by Bulgarian Academy of Sciences archaeologists Katya Malamet and Professor Dimiter Kovachev. They both stated that they had never seen anything like it before.

The skull is the same size as a human child’s, but the bone density is lighter, smaller, and only 250 grams thick. It features six cavities that, according to the experts, belonged to the alien’s sensory organs. He possessed six eyes and other unknown organs when he was alive.

Skeptics believe the skull belongs to an undiscovered animal species because its traits do not match any terrestrial being.

What’s more remarkable is that the skull vanishes before scientists can conduct an extensive research on it. Everyone who possesses it understands that he does not want to share his possessions with the rest of the country.

Is this the bones of an ancient and undiscovered species, or the skull of an extraterrestrial being? VIDEO: