Mine was in my local woods as a teenager. I had been going naked at home every opportunity I got. Basically as soon as my parents went out I would strip off.

Then summer day I was out in the woods with some friends and decided to stay when they all wanted go on somewhere else. After a bit I decided to strip off. At first I was extremely nervous, I was about 14 at the time, and sat stock still for what seemed like ages just listening and looking for other people.

After a bit I calmed down and picked up my clothes and started walking around. I just loved the feel of being naked and so close to nature. 

that was the first of many such naked spells in the woods. Always on my own. I started off taking a small backpack and putting my clothes in there and carrying them as I walked. Over time I got more confident and actually left my clothes well hidden and walked totally free. 

I would be very surprised if I was never seen as I roamed far and wide in those woods. But I was never aware of having been seen, but did hide a few times, and nothing ever got back to my parents.

Happy days.