The images are striking: two enormous blocks face each other, separated by a narrow, almost perfectly vertical gap. Even stranger still, each rests on a sort of small natural plinth, giving the whole structure a rather improbable balance. According to sources, the formation is around 6 to 8 metres high and nearly 9 metres wide. The sandstone layers from which it was formed date back some 400 million years.
Unsurprisingly, the phenomenon has taken the internet by storm. The regularity of the separation has fuelled all manner of theories: a lost civilisation with unknown technology, a gigantic cutting tool and, inevitably, extraterrestrial intervention. The word ‘laser’, highly effective at driving video views, has thus become almost inseparable from Al-Naslaa.
But there is no credible evidence to suggest that the rock was cut by a laser or even deliberately by human hands. The preferred explanation is geological. Sandstone can fracture naturally along what geologists call a joint, that is, a break in the rock that can form remarkably straight lines. Tectonic movements may have opened up or accentuated this fracture.
Once the fissure had formed, erosion would have done the rest. Over thousands of years, sand-laden wind, water and temperature fluctuations can gradually widen and polish a fracture. The same process of erosion explains the astonishing ‘feet’ on which the two blocks now rest.
There remains, however, an important caveat: whilst we understand the natural mechanisms capable of producing this type of formation, the exact sequence of events that gave Al-Naslaa its particularly clean split has not been established with certainty. Several scenarios have been proposed: a natural fissure, tectonic stresses, gradual weathering of the rock and wind erosion. To say that ‘nobody knows how this rock was cut’ is therefore an exaggeration; to claim that a laser was responsible is an even greater exaggeration.
Al-Naslaa also has another point of interest, one that is far less spectacular on TikTok but historically significant. Its walls bear ancient inscriptions and depictions of animals, with some inscriptions dated to around 3,000 years ago by Saudipedia. In ancient times, the Tayma region was an important transit point for caravans.
And perhaps that is precisely what makes this rock so fascinating. It does not need an extraterrestrial laser to be extraordinary. A natural, almost geometric fracture, shaped over millennia by the desert, is enough to produce something that, to our eyes, appears man-made.
