While the majority of islands were formed thanks to volcanic activities, there are some small islands that are believed to be the product of manual labor. This is exactly the case with the hundreds of tiny islands surrounding Scotland. It has been known that they are not a natural occurrence for decades, but scientists thought that they were formed during the Iron Age. However, a recent discovery of 5,600-year old pottery in the region hints that the islands might have been built and used by the people who inhabited the area during the Neolithic Period.
The small islands, often known as crannogs, are just a few meters large, but scientists suspect that they might have been held in high regard by the Neolithic People who helped
Just 10% of the crannogs around Scotland have been properly dated and excavated, so it is likely that new discoveries will be made as the research continues. There are 570 mapped small islands in the Scottish area, but an even large number of similar structures are found near the shores of Ireland.