From a very good article in the Wikipedia on Hiking. I didn’t expect it was so good and I have learned a few new words too!
-a yin – yang altered symbol
-a mycaenean decorative motive
-two spirals going away from the meeting point leaving (or not) a trace
-an altered motive of the zodiac sign of the Cancer
-the eye of Ra under sea
-snails strolling after the rain
-two ρ just born
But with all the admiration for an archeologist’s creative imagination, which of these is in the context and tells us (warn us / reminds us) «Leave no Trace»? To a mechanic’s imagination, for example, it could represent the metal plates of the suspension around the shaft of a truck.
Though maybe deep down somewhere you are right. There is a lot of latent hippie heritage in the modern outdoor culture. So, if one knows that, most of what you saw in this symbol FITS !
AKK, use it but with caution 🙂