Scar boat burial
... that despite being located in the Orkney Islands, the sand lining of the Scar boat burial matches no known Scottish sand?
... that despite being located in the <a class="mw-redirect" href="./Orkney_Islands" id="mwDKc" rel="mw:WikiLink" title="Orkney Islands">Orkney Islands</a>, the sand lining of the <b id="mwDKg"><a href="./Scar_boat_burial" id="mwDKk" rel="mw:WikiLink" title="Scar boat burial">Scar boat burial</a></b> <i id="mwDKo">(plaque from site pictured)</i> matches no known <a href="./Scotland" id="mwDKs" rel="mw:WikiLink" title="Scotland">Scottish</a> sand?