Quite often the weekends find us going to some event or museum.  It was after our latest trip to the Arizona Science Center, on a short walk to a downtown restaurant for lunch, that Carter made what he thought was an amazing discovery.

To most it would appear to be a vacant lot.  It sat there, lonely and unused, surrounded by apartments and business buildings.  A large lot with nothing on it.

Well, not exactly nothing.

carter:  Look momma!  Look at all those free rocks!!

I had to limit him to three rocks. 

Well, three rocks on our way to the restaurant and three on our way back.