[SunkenCiv]

• Chalcolithic catastrophe on the Mondsee [07/15/2014]
• Oetzi connection: Prehistoric Disaster: An Alpine Pompeii from the Stone Age [10/11/2008]

[nickcarraway]

Mysterious underwater karens?

[DesertRhino]

Probably marked the shoreline back then. And 5000 years is a guess, but probably a guess. It would be hard to date something like a stone cairn underwater. The closer you get to 10k years ago, the more likely the ending Ice Age was still melting away and lakes were lower.

[muir_redwoods]

I wonder if they were shoreline anchors for fishing nets or something similar