Ras Kasaroun () or El-Kas (), also known as Casius Mons in Latin, or Kasion Oros ()

Like the other Mount Casius in Syria, it was historically associated with a shrine to Zeus, one of whose epithets was Kasios.

History The sandy mount stands out about the flat landscape, though it is a mere 100 metres above the sea.

Classical Age Persian period To Greek geographers such as Herodotus (who considered it to mark the boundary between Egypt and Syria), is a small mountain and a former town near the marshy Lake Bardawil, the "Serbonian Bog" of Herodotus, where Zeus' ancient opponent Typhon was "said to be hidden".Lane Fox 2009:253-56.

Hellenistic period Here, Greeks knew, Baal Sephon was worshipped.

Its name is given to the Catholic titular see of Casius.

Medieval Ages The saying "Kasiotic knot", which in Medieval Greek meant "someone who are crooked in their ways", comes from the town's name.

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