Rose Point
... that Pennsylvania's longest cave extends from Harlansburg to Rose Point, over 11 miles (18 km) away?
... that <a href="./Pennsylvania" id="mwEFw" rel="mw:WikiLink" title="Pennsylvania">Pennsylvania</a>'s longest cave extends from <a href="./Harlansburg,_Pennsylvania" id="mwEF0" rel="mw:WikiLink" title="Harlansburg, Pennsylvania">Harlansburg</a> to <b id="mwEF4"><a href="./Rose_Point,_Pennsylvania" id="mwEF8" rel="mw:WikiLink" title="Rose Point, Pennsylvania">Rose Point</a></b>, over <span about="#mwt20" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"11"},"2":{"wt":"mi"}},"i":0}}]}' id="mwEGA" typeof="mw:Transclusion">11 miles (18</span><span about="#mwt20" typeof="mw:Entity"> </span><span about="#mwt20">km)</span> away?