I think a concept like this has a lot of potential but unfortunately the gameplay is too simplistic imo. The way the player walks forward only to be teleported back as the camera repositions itself is a bit annoying. Being able to leave a mark is neat but there isn't really any way to interact with other player's marks, like maybe being able to leave them a message back. I wasn't sure if there was an end to the game but I wandered for a while up the mountain before stopping. I get the intent behind it, but it would have been nice to see a bit more done with this concept with a stronger tie to the theme. Still a neat little experience, nice work!