Trondheim Airport, Jonsvatnet
... that during the Second World War, the Luftwaffe landed planes on a frozen lake at Trondheim Airport, Jonsvatnet, where the ice was 1 metre (3 ft) thick?
... that during the Second World War, the <a href="./Luftwaffe" id="mwCzg" rel="mw:WikiLink" title="Luftwaffe">Luftwaffe</a> landed planes on a frozen lake at <b id="mwCzk"><a href="./Trondheim_Airport,_Jonsvatnet" id="mwCzo" rel="mw:WikiLink" title="Trondheim Airport, Jonsvatnet">Trondheim Airport, Jonsvatnet</a></b>, where the ice was 1 metre (3 ft) thick?