I own a small cabin, and because of a new neighbor I need to locate the lot corner/boundry markers. The rear markers are metal pipes (I've already found one of those) and the front markers are the small metal things (one inch diameter) pounded into the ground. According to a neighbor, the front markers used to be visible, but a few years ago the county repaved the road and covered them up. I'm looking for just enough detector to locate the 3 boundry markers I haven't yet found, but want to make sure I don't waste money and buy something that can't locate the front markers buried by asphalt. Any suggestions greatly appreciated.