Tidal waves • Orkney Crofts - The best self-catering accommodation in Orkney.

Orkney suffers some of the worst coastal erosion in Scotland. As a result over 1,000 archaeological sites are at risk.

A new book by county archaeologist Julie Gibson will be launched this week, outlining a fraction of these sites and highlighting the problem.

A collaboration with photographer Frank Bradford, Rising Tides: The Loss of Coastal Heritage in Orkney, is being launched in Kirkwall tonight, part of the Maritime Societies of the Viking and Medieval World conference.

Proceeds from the title will go to the Friends of the Orkney Archaeolgical Trust.