I work for the parks and recreation in my town so after work today I thought I would just hit an area that has some old oaks in it...well one wheatie was the only coin and the usual trash but I`m starting to be able to call what I`m going to dig in regards to the trash and that makes me feel like I`m learning my machine. the wheatie was only between 4 and 5 " deep but it sounded out solid and locked in good, sure enough it was an old coin and I like finding old coins...lol