Penny Lane is a cache next to the sidewalk. It's a small Lock & Lock style box, maybe hard to find. It's magnetically held, which isn't much of a hint to help you find it, but it's simple to get the cache and put it back in place. It's a box with a magnet.
Possible thorns and bugs, the usual, in this forest. It's a short walk from the suggested parking lot, see the waypoints. Don't park on the grass by the road. Be careful about drivers in the parking lot. Bring cool things to trade. Let's find a cache at Penny's!