Gamleborg
... that Gamleborg represents Bornholm's oldest defence works?
... that <b id="mwA88"><a href="./Gamleborg" id="mwA9A" rel="mw:WikiLink" title="Gamleborg">Gamleborg</a></b> <i id="mwA9E">(fortress ruins pictured)</i> represents <a href="./Bornholm" id="mwA9I" rel="mw:WikiLink" title="Bornholm">Bornholm</a>'s oldest defence works?