Ajalon, also called Aijalon, was a town and valley assigned to Dan and later given to the Kohathite Levites. Another Ajalon lay in Zebulun.
The Amorites remained in the Danite Ajalon, and the place later marked boundaries and military events. Joshua mentioned its valley in the command concerning the sun and moon. Ajalon also appears in the account of Jephthah’s conflict with Zebulun.
The principal Ajalon was near Beth-shemesh and has been identified with modern Yalo at the foot of the Beth-horon pass. It marked a boundary between Judah and Israel and was an important location in Israelite history.