I think the round on on the left is a scraper it is diffrent from the others i find its notched around the outside. The bigger round on i think was a small mano its pretty thick and just the right size to be one but its chipped on the underside just a little bit. I started didding on the side of one of the hills rather than digging in the lower creek level like most have been. I dug 2 inches down and about 3 feet wide and found that longer tip and the preform. I think ill stick to that area when i go back, it seems undisturbed.