Ancient inhabitants of Scotland built islands in the country’s lochs, with most thought to be about 2800 years old – but several actually date back 5600 years
Source:
https://www.newscientist.com/article/2206322-artificial-scottish-islands-are-thousands-of-years-older-than-thought/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home