Me and my brother in Peppersauce cave in the early '80s. I know exactly what you are talking about.
I grew up in Tucson and have been in peppersauce cave more than a dozen times. Very often we would spend days inside. One time we spent over a week camping in a big chamber fairly deep inside. There wasn’t much graffiti that I recall. We would pitch tents in that chamber and brought Coleman stoves to cook on. We put candles around the sides and where we could get in the overhead and explored every nook and cranny we could find. This was back in the 70s. The on example of graffiti I can remember were a series of little black arrows that someone marked or painted. We followed them through several cavern and through what is known as the rabbit hole. It was at the bottom of a 40ft stone/mud slide ands you had to wiggle through a 10ft hole with your arms oabove your head to get to another cave network. Dutifully following those black arrows we followed them for hours. Finally we got the last one and it was pointed up with the word “Mars” under it. We laughed for days.
It saddens me to hear about the shape it is in now but to the poster, thanks for bringing back some very fond memories. When I tell my friends about our peppersauce adventures they always remark that they now understood why I could spend time on submarines!
That’s a great story!