Curonian Spit

The Curonian Spit was formed about 3rd millennium BC.[1] A glacial  served as its foundation; winds and sea currents later contributed enough  to raise and keep the formation above sea level.[1]
The existence of this narrow  is inherently threatened by the natural processes that govern shoreline features.[2] It depends on a dynamic balance between sand transport and deposition. If (hypothetically) the source area to the south-west were cut off, say, by a large port construction with a , the Spit would  and eventually disappear. It is thus a geologically speaking ephemeral coast element. The most likely development, however, is that the shallow bay inside the Curonian Spit will eventually fill up with , thus creating new land.