nuolmerkit
Nuolmerkit is a Finnish term that translates to "arrow marks" or "arrow signs." It most commonly refers to markings found on ancient rocks, typically in Finland and Sweden, that resemble arrows. These markings are believed to have been created by prehistoric peoples.
The exact purpose and meaning of nuolmerkit are not definitively known, but several theories exist. One prominent
The creation of nuolmerkit involved pecking or grinding away the rock surface to expose a lighter layer