We've got some great natural wonders in Humankind — huge ecological and geological wonders — but there are living wonders, too, and the Great Migration of the Serengeti is a living wonder that changes over the course of the year but could be restricted to three tiles full of wildebeest in Humankind.

I'm not sure exactly what sort of benefit it should provide.  Maybe a food bonus per attached territory on the city that hosts it, or a food bonus per unattached territory that adjoins the host city (as though the city were surrounded by Mupia fields) or a population consumption discount.  Yes, I know these are some Bantu and Maasai benefits. Looks like I'm coming to the same ideas the team did.  ^^      Anyways, I just think it would be a neat wonder; I'm sure there's some neat new thing it could do in-game.

support you but it must be difficult to achieve