The Ranch I hunted on in Northern NM was family owned for several generations. I found an old jaw type trap that had no visible markings on it. The Ranch owner said no one in his Family has ever trapped on the Ranch. I displayed it on the hearth of my fireplace until Katrina came along and took it.
There was also a rock formation on the Ranch that had Petroglyphs, but I didn't take any pictures. I wish I had, because I don't hunt that Ranch anymore.
I am amazed by the Petroglyphs, and how they have lasted through the years. Most are exposed to the outside (sun, wind, rain, etc), and they are still legible. What type of fruit/vegetable matter did they use that is so permanent? I have to paint my house every 10 years, and I buy the best paint available, but the petroglyphs have lasted 10 times that. Maybe someone could make a paint as durable