But they're (possibly) younger than the New River! <https://en.wikipedia.org/wiki/New_River_(Kanawha_River_tributary)#Geology https://en.wikipedia.org/wiki/New

But they're (possibly) younger than the New River! <https://en.wikipedia.org/wiki/New_River_(Kanawha_River_tributary)#Geology https://en.wikipedia.org/wiki/New_River_(Kanawha_River_tribu...> (Blew my mind when I first encountered this a few years back.)