There's more to this rock thing. About 40 years later, when the Israelites

were soon to go down to the (flooded) Jordan and cross it, the men of each tribe were to choose a man - they were not given specifics, but they did know they'd have to fight for the land that lay across the river.  So, it only makes sense that the leading men of the tribes would choose an experienced warrior - a man likely in his 40s or 50s.  Btw, only Joshua and one other man was over 60 - because of that golden-calf rock-concert held some 40 years ago.

Anyway, the Lord dried up the riverbed and the people crossed.  Then the specifics were given to the 12 men.  Each grab a rock, carry it on your shoulder up to the campsite near the shore and lay it down.  But that's not the half of it.

Next morning, the same 12 men each took up their stone and headed for Gilgal.  Looking at the map, Gilgal is about two miles from the Jordan valley.  In other words, not only did these men carry a 250-pound rock for about two miles, atleast some of that trip was uphill.   This account is in Joshua 3 and 4.

Where this is all going is:  were people stronger in ancient days?   Joshua was 80ish, and still stomping canaanites.  In Joshua 14:10-12, specifically states the old warrior's age of 85 years, AND he prayed to the Lord for the strength to drive out the anakims - a big and mean group, who lived on a mountain.  And then Joshua gave that mountain to a brother-in-arms as an inheritance.

Ya'd think, after all that uphill trouble, battling some really vicious dudes, that Joshua would keep it for himself.  Evidently not.

By the way,  in Joshua 24:29, old age did finally catch up with Joshua.  He was 110 when he passed into eternity.  Oh wait a sec, not long before he passed, (Joshua 24:26) he "...took a great stone and set it up there..."