maximus otter
Recovering policeman
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A stone wall underneath the Baltic Sea may be the oldest known megastructure built by humans in Europe. It dates back about 11,000 years to the Stone Age, and was first discovered in 2021 about six miles off of Germany’s Baltic coast.
The Blinkerwall is about half a mile long along the Bay of Mecklenburg. It was initially spotted by accident when a team of scientists from Kiel University in Germany were using a multibeam sonar system from a research vessel to study the crust of the seafloor.
The team believes that Stone Age hunter-gatherers likely built it about 11,000 years ago to hunt reindeer. Hunting walls like this would catch herds of animals that are more likely to run parallel alongside obstacles instead of jumping over them.
While the Baltic Sea is currently about 68 feet deep in this location, the Blinkerwall was likely built before the sea level rose about 8,500 years ago, towards the end of the last Ice Age.
https://www.popsci.com/science/europe-oldest-megastructure-bottom-of-the-sea/
maximus otter

The Blinkerwall is about half a mile long along the Bay of Mecklenburg. It was initially spotted by accident when a team of scientists from Kiel University in Germany were using a multibeam sonar system from a research vessel to study the crust of the seafloor.
The team believes that Stone Age hunter-gatherers likely built it about 11,000 years ago to hunt reindeer. Hunting walls like this would catch herds of animals that are more likely to run parallel alongside obstacles instead of jumping over them.
While the Baltic Sea is currently about 68 feet deep in this location, the Blinkerwall was likely built before the sea level rose about 8,500 years ago, towards the end of the last Ice Age.
https://www.popsci.com/science/europe-oldest-megastructure-bottom-of-the-sea/
maximus otter