Medieval harbour discovered in Scotland

Archeologists in Scotland have found the remains of a sophisticated harbour and dockyards at Loch na h-Airde. One of the marine archaeologists at the site is reported to have said about it that:

This site has enormous potential to tell us about how boats were built, serviced and sailed on Scotland’s western seaboard in the medieval period – and perhaps during the early historic and prehistoric eras as well. There is no other site quite like this in Scotland.

The level of sophistication involved in the construction of the harbour, including a sill to maintain a constant water level inside no-matter the state of the tide. Of course up until the invention of the railways rivers and the sea was the best way to get anywhere on this island, and is still the way that the vast majority of all international trade is conducted.