About 25 km from the oasis of Djanet in southeast Algeria, on the eastern border of erg Admer towards Tassili n'Ajjer in the Tigharghart region, stands a large sand monolith.
[1] The rock engravings of La vache qui pleure are a masterpiece of Neolithic sculpture.
Carried out in bas-relief, the engravings are of extraordinary workmanship and harmony, made of deep grooves carved into the rock.
[2] A bas-relief in the sarcophagus of queen Khouit, wife of Pharaoh Mentuhotep II of the 11th Dynasty, also shows a tear falling from a cow's eye while it is being milked.
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