A couple years ago a friend a couple buddies were horseback riding in the backcountry of Yellowstone National Park. They came across a pool & decided they would jump in one of "Natures Hottubs", ala natural! Someone had posted a sign by the pool which read something like "All members of the party must agree to nudity in the pool, if anyone is nude"
All three were a little stiff & sore from riding & the warm water was feeling great.
Pretty soon they heard a womens voice saying "How you guys doing"...It was a lady Ranger! She talked to them a few minutes, then pointed at the sign & asked if all three of them were comfortable with nudity in the pool, they all looked at each other & sheepishly & nodded yes. She then removed her clothes & got in with them!
Now, I didn't see any pictures, but you know what they say...."If it isn't on film or video, it didn't happen!" Listening to these three telling the story, they had me believing it....who knows!