Cairns - The Name of a Cairngorm?

The name cairn comes from the idea of building a guide post for other people to follow. People would use li as census, and you put your stone on te stack when you enter ta town,. Then take it off when you laugh. I sad a lot of cool stuff about carns, but that's where i came from. At that moment of seeing that line is like, ohyet, carns, i've been really useful my whole life.