I've often wondered why so much of the clad is so deep. Then I got to noticing that most of the parks made in the past 20 or 30 years do not have a natural topography. They mostly have a foot or more of fill to level out a lot of the parks for games such as baseball or soccer, or even picnic areas. I find coins especially much shallower in the older parks. However the best park in the city once had a natural sand beach nealry a hundered yards long. The dam was put in in 1902 and it was an amusement park and swimming beach up until the 1950s. Then the city came along and built an elevated jogging and walking path right across the old beach. Everything that was buried in the beach sand is now about 4 to 5 feet deep! And you are not allowed to wade the water, so no one has ever recovered much valuables from that site at all. I am working with the local museum people now to try to get permission to wade hunt the water leading out from where the old beach was located. So far the city won't budge, but the museum curator is a high school classmate so I may be able to swing it later this year. I will certainly post same if I do. Monty