There are places in the National Park System where carvings, etchings, and even 19th century “graffiti” are preserved. Places like El Morro National Monument in New Mexico, Arches National Park in Utah when you consider pictographs, and Petroglyph National Monument in New Mexico.
Unfortunately, there is a surprising number of 21st century individuals who think it’s perfectly appropriate to carve their names, initials, and other signs and symbols into national park landscapes.
https://www.nationalparkstraveler.org/2020/12/updated-zion-national-park-struggling-battle-graffiti-artists