then you shall tell them, Because the waters of the Jordan were cut off before the ark of the covenant of Yahweh; when it passed over the Jordan, the waters of the Jordan were cut off: and these stones shall be for a memorial to the children of Israel forever.
Now it'd be fun-They set up two memorials. They took stones and set them in a pile in the Jordan River, and then they also set a pile up on a bank. It'd be fun to get some scuba gear, since they were there to that day, to see if the stones are still there in the Jordan River that Joshua set up.