A great pile of stones was heaped upon Achan and his family. We are to assume that the rock monument remained visible until the time of the writing of the book, providing a clear connection to the earlier rock pile at Gilgal (Joshua 4:1–24). This rock pile was a reminder of the deadly and terrible consequences of sin.1
26 And they raised over him a great heap of stones that remains to this day. Then the LORD turned from his burning anger. Therefore, to this day the name of that place is called the Valley of Achor.