One of my favorite facts about the Appalachians is that parts of them formed before amoebas.And they're not even the oldest mountains! The Black Hills are older than multicellular eukaryotes. The Makhonjwa mountains formed early enough to watch as cyanobacteria first filled our atmosphere with oxygen.By the time the upstart Alps came around, there were already sharks and ferns, and the Rockies came after ants and crocs and roses. But I'm a child of the Appalachians, so they get my love <3