Curious about "Avin Sink" in Nixa

[crm114]

Howdy, I moved into Nixa about two years ago and was very curious about the fact that this state actually has caves. Unlike the boring clay geology of my home state Oklahoma. I can walk to the "Avin Sink" area into about 3mins. I was curious if anyone had pictures or could explain any more about this geological feature.

Recently we have had insane rainfall, water going into that sinkhole has been over five feet deep and at least thirty feet wide at some drainage junctures. Within about an hour the land is mostly dry. I just figure there must be some kind of crazy large and impressive sinkhole/cave system out here.

Anyhow, no experience caving- experience with fallpro is limited to industrial applications. So I was kind of hoping to live vicariously from some of the experts and enthusiasts here.

Just very curious about the geology below my feet.

[CliffCaver]

The sinkhole goes down 40 feet then only opens up maximum of 18ft tall and it goes back about 140ft there are no pictures of the cave on the internet. So if you go post pictures so we can see it!

[Nicotti]

Looks like that sink (and the ones nearby) mostly drain to Blue Spring to the northwest.

GIS layers of dye traces are your friend: https://modnr.maps.arcgis.com/apps/weba ... a24a3cb935

[Nicotti]

That said, it's unlikely that there is a navigable cave between the two points, that one could go through, prolly just the usual swiss cheese of dissolved cracks and fractures that water drains thru like natural pipes.

Although that shorter dye trace near the spring was injected into Saunders Valley, which does have a cave that goes nw to the spring area.