An ancient seawall that was erected thousands of years ago along the Mediterranean coast at the end of the last ice age is the oldest evidence of a civilization trying to defend itself against rising sea levels, a team of researchers said in a newly released report.

The 100-meter-long wall, built 7,000 years ago out of boulders in what is now northern Israel, was an early attempt by villagers to fend off the perils of a changing climate.

In this case it was in vain. The Neolithic village was long ago overtaken by the sea as it swelled from glacial melting at the end of the last ice age.