(no subject)

Heehee, look at what popped up in my feeds. The lost waterfalls of Greenbrier, West Virginia.

So the Greenbrier area was a funny geology that allows for waterfalls that are sourced from underground streams and flow out into undergrounds streams. There are two layers of limestone in the Greenbrier formation so there are a lot of caves and underground rivers and such, but separating the two is a layer of shale that water can't get though. The result is various spots where this underground water is forced to flow over an above ground waterfall before going underground again.

If there are spots below ground where the shale has been fractured, there are likely underground waterfalls there too.

Karst landscapes are neat.