(December 9, 2023) The Ceyhan river's economic region is split by the Amanu's Mountians which today are called the Nur Mountains. One of the two main passes through the mountains is located just west of Zincirli (Ancient Sam'al). The other if further south across from the coastal city of Iskenderunand is called the Belen Pass.
The Syrian valley to the east of the Nur Mountains has not central navigable river. It is fertile land crisscrossed by small streams which eventually empty into the Orontes river to the south in Lebanon.
(May 3, 2023) Droughts separate the archaeological periods in the Levant. States weakened by local droughts were often subject to raids right after the droughts by Mesopotamian empires which were unaffected due to their irrigation. Below is the latest widely accepted chronology proposed by Amihai Mazar in 2014 shown below: