alt Hacker NewsAnother Fun Fact: the Appalachian mountains formed before sharks existed, the rings of Saturn existed, and before bones existed.
Another Fun Fact: the Appalachian mountains formed before sharks existed, the rings of Saturn existed, and before bones existed.
But they're (possibly) younger than the New River!
<https://en.wikipedia.org/wiki/New_River_(Kanawha_River_tribu...>
(Blew my mind when I first encountered this a few years back.)