Yep. Any time you get a good rain, it resets the whole spot and makes it new. There's a spot in Riceville, TN in a field that is no bigger than 30 yards long by 30 yards wide. As many times as I have walked it and flipped every piece of visible flint that I see....after a good rain or two, I can go back to it and find points. I have a whole case full of them that came from that one little spot and a pile of broken ones. I love hearing the rain beat the roof in lol.