The genetic connections between the Loch Borralie individuals and Orkney populations suggest that the maritime communities of the Iron Age north coast of Scotland maintained active social relationships — including the kinship ties that the DNA analysis documents — across the Pentland Firth.

Crossing the Pentland Firth in a wooden boat, even a well-built one suited to Atlantic conditions, is not a trivial undertaking.

The tidal races and weather conditions in the Firth make it a demanding stretch of water even today, with modern vessels.

That Iron Age communities were maintaining relationships across this water with sufficient regularity to leave genetic traces in the archaeological record speaks to their navigational confidence and their commitment to the social networks that the crossings maintained.

This maritime connectivity is relevant to the Loch Borralie burial in multiple ways.