11 feet deep

Vikings left Greenland because of an 11' rise in sea level, under six centuries ago.

https://www.livescience.com/agu-floods-drove-vikings-from-greenland

And, sea level is rising again.

https://www.france24.com/en/video/20230420-arctic-amplification-climate-change-diminishing-sea-ice-raising-temperatures-at-alarming-rate

https://www.pbs.org/newshour/show/ice-sheets-in-greenland-antarctica-melting-faster-than-previously-thought-research-shows

What will that do to Naples? Just one meter drowns Four Corners, the water treatment plant, and the airport, making the town uneconomical:

 

 

 

 

 

 

 

The hospital is partially underwater at two meters (6.5') sea level rise.

 

At 11', goodbye Port Royal, Royal Harbor, Naples High, and most of the Moorings.