The first entry starts in the Valley of Achor.
At Khorebbeh, situated in the valley of Achor, below the steps leading to the east, (dig) forty cubits: a coffer (full) of money, the sum of which is the weight of seventeen talents.
Valley of Achor - Often referenced as a location for buried treasures.
In the Book of Joshua, Achan's stolen silver and gold are brought "unto the valley of Achor" (Joshua 7:24, KJV).