Wadi El Natrun

Wadi El Natrun (Arabic: وادي النطرون "Valley of Natron"; Ϣⲓϩⲏⲧ Šihēt, "measure of the hearts") is a depression in northern Egypt that is located below sea level and below the Nile River level. The valley contains several alkaline lakes, natron-rich salt deposits, salt marshes and freshwater marshes. In Christian literature it is usually known as Scetis ( in Hellenistic Greek) or Skete (, plural in ecclesiastical Greek). It is one of the three early Christian monastic centers located in the Nitrian Desert of the northwestern Nile Delta. The other two monastic centers are Nitria and Kellia. Scetis, now called Wadi El Natrun, is best known today because its ancient monasteries remain in use, unlike Nitria and Kellia which have only archaeological remains. The desertified valley around Scetis in particular may be called the Desert of Scetis. The area is one of the best known sites containing large numbers of fossils of large pre-historic animals in Egypt, and was known for this in the first century AD and probably much earlier. Wadi al-Natrun is the common name for a desert valley located west of the Nile Delta, along the El Tahrir markaz, which is about 10 km west of the entrance to Sadat City on the Cairo-Alexandria Desert Road, and about 50 km from Khattabah on the Nile (Rashid Branch), and it falls below the level of the plateau surface surrounding it about 50 meters. The length of this depression ranges between 5, 55 and 60 km, while its average width is 10 km, and its deepest point reaches 24 meters below sea level. The depression is the smallest depression in the Egyptian Western Desert, with an area of about 500 km2. Therefore, it is true that it is a depression and not a valley, because the region is a closed depression that has a beginning and an end, and it has no source, estuary or tributaries, so the launch of the word "Wadi" on the depression is not topographically correct. The Wadi contains 12 lakes, the total surface area of which is 10 km square and their average depth is only 2 m.