Kilometric sea level changes during the Messinian salinity crisis
https://www.science.org/doi/epdf/10.1126/sciadv.ads9752
https://en.wikipedia.org/wiki/Messinian_salinity_crisis
* event: Mediterranean Sea desiccation 5.9-5.3 million years ago
* left deep dry basin 3-5 km deep below normal sea level
* Messinian salts est. 1M+ cubic km