Al Naslaa split rock.

It Looks Like a Laser Cut But What Really Split the Ancient Al Naslaa Rock?

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The Tayma oasis in Saudi Arabia is famous for its rock art and its historic legacy. It was a major trade route in antiquity and was once the dwelling place of a Babylonian king, Nabonidus. It is referenced in both Assyrian and Biblical sources as a trading post and is also known for abundant rock art made as much as 4000 years ago. One particularly interesting feature of the Tayma region is the Al Naslaa rock formation - a sandstone block connected to what looks like an eroded natural pedestal. The rock is split through the middle by a clean and straight crack which looks almost as if the rock was sliced with a laser.

Surprisingly though, this feature is natural, formed by faulting or jointing activity.

Ventifacts of the Arabian Desert

Most of the Arabian Peninsula is made up of limestone, sandstone, and shale, which overlie the west Arabian crystalline shield and a southern crystalline complex. These overlying sedimentary deposits formed in shallow sea environments. In the present-day Arabian desert, windblown sand as well as periodic rains have carved the sandstone and limestone bedrock, creating many unusual rock shapes - some of which look quite extraordinary.

Al Madinah Province Saudi Arabia. (Saminathan Suresh/ CC BY SA 3.0 )

The block is also archaeologically significant because of an exquisite example of rock art that resembles a horse or camel that is engraved onto it. The block is in situ and the lower section of the block resembles what is called a ventifact. Ventifacts are geologic formations created by abrasion from windblown sand beating against a rock surface. This can create rocks with unusual shapes and very smooth surfaces.

The White Desert of Egypt is famous for ventifacts that resemble giant stone mushrooms emerging out of the landscape. It is not clear if the Al Naslaa rock formation is a ventifact, though the bottom part connecting it to the ground does resemble one. The upper part of the block has a very smooth surface on one side, but the shape of the complete rock looks too angular and blocky to be a true ventifact. It could, however, be a ventifact that is still in the process of forming.

Limestone rock formation in the White Desert, western Egypt. ( Public Domain )

Hypotheses of Weather and Lasers

Geologists who have examined the fracture say that it was probably formed when the ground beneath it was offset, causing the rock to split apart. It has also been suggested that it could be an old fault line. The rock material near faults tends to become weakened and erodes more easily. As sand blew into the cracks of the rock over the ages, this material may have been more rapidly eroded than the surrounding sandstone, resulting in the fracture.

The fracture may have also formed from jointing of the rock. In geology, joints are fractures formed by rock being pulled apart along zones of pre-existing weakness through some sort of pressure. Joints can be very straight and look almost artificial. In certain climates, ice can form in the cracks created by the joints and cause the fractures to widen until rocks are pulled apart. There are a couple of other cracks parallel to the one that split the rock that may be joints. The major crack could be related to them and just be in a more advanced stage.

A rock in Abisko fractured along existing joints possibly by mechanical frost weathering. ( Chiton magnificus )

More extraordinary explanations have also been proposed. Some observers have suggested that the rock was made by a laser - perhaps by extraterrestrials or an ancient advanced human civilization. It is always possible that it was made artificially, but there doesn’t appear to be any other reason to believe that the formation was artificial other than the very clean, precise cut separating the halves of the rock.

There is also rock art, but the rock art is placed haphazardly with respect to the crack and appears to be unrelated to it. Also, the rock art, the only clear artificial modification of the rock, is isolated to one part. The rest of the rock is clearly just a natural sandstone outcrop, not an artificial block.

Rock art on the Al Naslaa rock formation. ( maestroviejo)

Unless the laser was an accidental blast from a ray gun, there doesn’t appear to be a reason to think that the rock was intentionally cut by humans or a non-human intelligence. The natural explanation is, at the moment, more likely since we know very straight fractures occur in rocks that look almost artificial and we don’t have any evidence that ancient humans used lasers or that visiting extraterrestrials came to earth to use a laser to split this rock.

Comments

I would like to see what it looks like from over head.

I had a good look at this under a magnifier and wonder how one side of the rock (with the art on it ) is so smooth while the other side is not, surely it would have weathered evenly on both sides?

IF you took the time to act and not react and look at the other side. you would see that there is a tremendous amount of weathering and that all the sediment lines and 'flaws' line up!!!

to see if there were other photos. On line or in real books?? You might try going to a Library and looking it up! It has been talked about and discussed for many years. If you go around to the other side, you can see another 'split' starting, also very straight and parallel. Probably to, eventually, fall away and enlarge the gap by quite a bit.

Forget the crack/split/cut, the real fascinating ussue is how do the two halves of rock maintain an equidistant gap from top to bottom?

The left portion has two thirds of its size to the left of the centre of the support base therefore ir should (over time?) topple or move away at the top.

Whoa Neddy!, wait a sec’ this is a hoax, photoshopped if you like. Look more carefully and you will see that I am not incorrect. The two halves are different in colour and shape although they approximate. The equidistance is maintained by the photoshop.This is three different photographs. Only one of the rocks has straight edge with one edge of the photo cut straight, allowing a little sky and then overlapping the very different shape of the other rock then  photographed again.

You will also notice that at the gap point, moving ones eye from left rock to right rock, none of the crack lines or markings correspond although, again, they do approximate.The actual shape above the gap and below the gap is completely different This alone is enought to tell me that it is a set up.  

 

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