Derrick Cave
... that Derrick Cave in northern Lake County, Oregon, was designated as a nuclear fallout shelter in the 1960s?
... that <b id="mwCEQ"><a href="./Derrick_Cave" id="mwCEU" rel="mw:WikiLink" title="Derrick Cave">Derrick Cave</a></b> in northern <a href="./Lake_County,_Oregon" id="mwCEY" rel="mw:WikiLink" title="Lake County, Oregon">Lake County</a>, <a href="./Oregon" id="mwCEc" rel="mw:WikiLink" title="Oregon">Oregon</a>, was designated as a <a class="mw-redirect" href="./Nuclear_fallout_shelter" id="mwCEg" rel="mw:WikiLink" title="Nuclear fallout shelter">nuclear fallout shelter</a> in the 1960s?