What is the seasonal movement of tribes and nomads known as?

I've never heard of this word before, learned a new one !

Never heard of it either!

One of the best things about this game is learning new words.

Goodboy, I doubt even the farmers and shepherds who practice this even use this word.

I'd like to remind the person who set this question that place names, such as hafod and shieling, are spelled with an upper case first letter, eg.Hafod and Shieling