Most all drive ins in our area are paved over with new business'es on the properties.. 10/15 yrs back or so, you could find 1 here and there to hunt but, as some guys here say, they were mainly gravel and extremely hard to dig in. Also, the guys from the late 70s and thru the 80s had already pounded them so hard that, the few I've managed to detect were left with not much of anything to find. I did find a silver roosevelt and a school girl ring at 1 which just recently was developed (2 yrs ago). That was the last out of 5 in this area. They're all gone now..