 Ajalon is mentioned in the accounts of an invasion of Canaan by the Egyptian king Sheshonk I of Egypt in the 10th century BCE.This event may have been connected to an attack of the Amorites, before the arrival of the Israelites under Joshua.But since the valley stretches as far to the west as to a point halfway between Sha'alvim and Latrun, the city referenced in these letters may have been any settlement in the valley.