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Karnak erosion marks and sanding grooves

The Temple of Karnak

On the issue of so-called erosion marks and sanding grooves

is said in some cases, the so-called Wetzrillen or grinding marks were found on animal feeding (birds) or erosion due.

The question of birds on their need for salt by beak sharpening the ancient Egyptian temple walls to try to breastfeed, not be discussed further.

regard to the erosion of trade marks including several Egyptian guides, all of which had supposedly studied Egyptology, assures that:

At the annual Nile floods are small stones transported, then rub the result of turbulence on the components. This creates numerous grinding marks.


These claims are refuted by several arguments:

• extent seen match the reconstructed water levels are not in accordance with the position of the grinding grooves, or they are above the Nile water-maximum.
• The grouping and the distribution of Wetzrillen the building is unique as a human activity (anthropogenic origin) to recognize. This includes occasionally occurring "decorations", which are obviously coincide with the drag marks.

Of course, the erosion by water and wind on the royal temples of time and is not be denied even a major problem for the preservation of this cultural heritage dar. In some cases, even traces of erosion are observed which Wetzrillen or grinding marks are similar. However, they are easily recognized as non-anthropogenic origin. This is typical "Wind brands," emanating primarily from building edges or square corners and is usually horizontal and root-like verzeigend spread over the rock surface. They are formed by blowing hot mixture components (sand grains) from the stone by the wind, the surface by turbulence in the "sand blasting" is ground in a characteristic manner.

A beautiful example of such natural grinding grooves can be seen in a corner of the large Hypostylhalle in Karnak, as the above picture shows. The drag marks will begin immediately on the square edges or to the rim of the wall and run horizontally undulating - like water waves in crosswinds - bis knapp vor die hier rechtwinkelig abgehende Seitenwand. Hier hört die Wirbelbildung des Windes auf und damit die äolische Abtragung.