I am not quite sure. But here is something from the Dept of Conservation. I know sinkholes are part of it, and we have several in our neighborhood (a couple of them are ponds year-round). There are also drumlins up north in Pike County, aka "knobs." There's a lot going on in these parts!
Hi Brian, Do you realize we have Karst formations in St. Louis, or at least in the area? We are up in North County where it is definitely a thing.
Hey Robin! No, I didn't know that. I suppose they are coastline things, and St. Louis was a coastline eons ago, yes?
I am not quite sure. But here is something from the Dept of Conservation. I know sinkholes are part of it, and we have several in our neighborhood (a couple of them are ponds year-round). There are also drumlins up north in Pike County, aka "knobs." There's a lot going on in these parts!
https://mdc.mo.gov/discover-nature/habitats/caves-karst
Ahhhh...what an experience!
So many things I've done here have just been, 'wow!'