The 4,000-year-old rock formation known as Al Naslaa is split so perfectly that it almost looks laser cut.
Situated in Saudia Arabia's Tayma Oasis, this enigmatic sandstone rock - which consists of two precisely split boulders balanced on a naturally-formed pedestal - has been wowing visitors to the region for thousands of years.
What makes it so intriguing is the fact that the split between the two boulders is so perfectly straight that it looks as though it must have been created using modern laser-cutting tools.
While some people believe that Al Naslaa is evidence of ancient technology or alien visitors, however, most archaeologists agree that the split was caused naturally, most likely by tectonic movements.
It is also possible that it was formed as a result of ancient volcanic activity.
Whatever the case, it remains an intriguing spectacle for anyone who happens to come across it.