We use to ride 4 wheelers in Windrock years ago, before they started charging. A buddy of ours lived in Oliver Springs so he knew the trails pretty well. We went a few times after they started charging but I've not been in 5 yrs. The last time we went, we rode up to the windmills, I enjoyed it. The trails were well marked, fairly smooth, and I saw several Jeeps and rail buggies that day. It's very popular with the side by side crowd too. I reckon they still keep the trails marked and in good shape. It's probably the most popular woods riding spot around the Knoxville area.