According to the Scottish Crannog Centre, they have found artifacts at the site that came from Turkey around 500 BC. They also believe the crannogs may have ser

According to the Scottish Crannog Centre, they have found artifacts at the site that came from Turkey around 500 BC. They also believe the crannogs may have served as floating trading outposts. The hills surrounding the Crannog Centre were apparently filled with 10's of thousands of people, and there was a local industry, though I forget what it was. It's a lovely site with great recreations of ancient technology and villages, and nearby towns are quaint.