A Block of Stone That's at Abusio

One of the great examples yeah so this is a really one of my favorite examples actually this is a block of stone that's uh at  aburil wash. There's a little like over lip that's still there from thousands of years of weathering and through that little lip we can tell that the blade of this thing was very thin couple millimeters at best. When you measure out the ark of it you're talking like 30 feet diameter like some huge processing plant cutting this then you also see striationsUh on the on the stone itself that shows you how that saw progressed through the stone which was quite rapidly nowThis is amazing evidence because you can now sort of determine the the