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These grooves are not natural formations. These lines were carved into the wall, my best guess was in order to flatten the wall, make it rectangular. These grooves were almost entirely buried under soil before the excavation, suggesting they are quite a bit old. I won't know how old until I carbon date the excavated levels. The wall is probably mostly made of silicified sandstone, but this could be erroneous. There is a heavy solid iron content to it, not iron dispersed within sandstone, which is common to the region, but rather fused iron metal with sandstone. The material is not only hard but durable. I could not scratch this surface with a pocket knife. What I mean by that (since sand can't be scrathced with a knife either) is that by rubbing a knife or even another rock against the wall, I couldn't remove bits of sand, like what is common in sandstone. It's almost as though this wall was vitrified. If the vitrification was natural, the grooves were done in some very hard material. If the grooves were made before vitrification, the vitrification process was almost certainly unnatural. So the huge question to be answered is how much did the ancients alter this rock? With what technology?
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