Newgrange[1] in Ireland has a bunch of extremely old graffiti and it's amazing. You can clearly see dates carved into the rock from the 1800s alongside people's

Newgrange[1] in Ireland has a bunch of extremely old graffiti and it's amazing. You can clearly see dates carved into the rock from the 1800s alongside people's names. [1] https://en.wikipedia.org/wiki/Newgrange https://en.wikipedia.org/wiki/Newgrange