Early battle with a rising sea that failed
![](https://natalieparletta.com.au/wp-content/uploads/2019/12/191219-Map-full.jpg)
Around 7000 years ago, Neolithic villagers built an extensive seawall to protect themselves against sea-level rise in the Mediterranean.
It is the oldest known coastal defence evidenced by submerged archaeological remains, but the effort proved to be in vain.
Published by Cosmos.