[Tilted Irish Kilt]

smokingfrog :" The entire Florida peninsula is actually resting on Swiss cheese."

Spoken as only a Texan can about Florida.
Any County assessor will have a Plat map of any sinkholes that may be known - it will affect your residential insurance rates.

[smokingfrog]

Don't take me too seriously TIK. I have relatives in FL and have visited there many, many, many times. The geology of that region is just part of what makes it unique. I was just having some fun with the poster.

nevertheless ...