Making a 23 metre mark on the moon seems like a natural project for some country, then. Perhaps easier than orchestrating a soft landing.
There are lunar retroreflectors about a metre across [0] that are detectable with optical equipment, for some definition of optical. But to leave a mark that can be seen from earth - to leave your tag, or an X, or a crude drawing of a penis and testes - surely that's an urge as old as art itself.
[0]https://www.nasa.gov/mission_pages/LRO/multimedia/lroimages/...
