Mr. Flores,

I can say without a doubt that your list is not one of meteorite craters, but sinkholes. Someone mentioned the "Devil's Millhopper" in the thread, and they were positively on the right track!

Much of the Southeast, and almost the entire peninsula of Florida, is geologically "karst" topography. This means the subsurface layers are not impermiable stone, but rather they are soft and porous limestone, allowing water to flow freely, and shape the underground rivers through it. that is, the aquifer is not confined. There are numerous limestone cave systems beneath the ground as a result, many accesssble through such sinkholes and springs.

The way they are formed is occasionally, an area of limestone gets worn away enough by the movement of subsurface water, and the ground below it collapses, and fills up with water from the aquifer below that helped form it. These water-filled, usually round, sinkholes are called "Karst windows." When I was in school in Tallahassee, there were a few in the woods that we would swim in, complete with rope swing and all. There is a park that is full of them just south of Tallahassee called the "Leon Sinks Geological Area" at 30.18.35/84.20.50.

Sometimes, the pressure in the aquifer in the collapsing spot is strong enough to cause the water to flow out in a spring. There is an amazing one at 27.3.35/18.15.37 called "Warm Mineral Springs" that has an ancient burial site below it - apparently from when the water level was lower.

So... you have one of the most comprehensive lists of sinkholes on Google Earth, but regretfully, few if any of them at all, were caused by stuff falling from space. The forces that formed them are at work right beneath our feet.

Andrew