IMHO not only are ATV trails easy ways to travel deep into the woods but might also indicate hot detecting spots. In my area ATVs are popular. The trails are often deep ruts where the wheels are and higher dirt to both sides and in the middle of the ruts. The ATVs kick stuff up in the ruts and often throw it to the middle and sides. So you can often see with your eyes the type of material thrown up and/or use your detector to find something closer to the surface kicked up by the ATV. I find spots with lots of broken colored bottle glass and window glass are good sites. This works for me and I hope it may help you too. HH. Matt