I have recently got access onto private property at tuena when I went out there I found a straight in the creek which is after a 90 degree bend right after the bend the creek bed widens out while walking the bed I noticed piles of ironstone built up behind the bigger rocks, some rocks where in the creek still and some must only get hit while in flood my question is if you were to come across this would you run only the top 6 inches of wash or would you dig down and sample every layer appreciate any help.