On a spontaneous urge while crossing the country, I pulled off the road to follow a sign for something that I never did find and I can't remember. Regardless, in place of my original goal I did pick a random cemetery to wander around, and found it filled with beautifully-decaying headstones amidst tall, unkempt grass. The oldest I found dated into the 19th century, though without paper and charcoal I couldn't discern writing on the eldest.