Orda Cave
... that Orda Cave underneath the Ural Mountains in Russia is the largest underwater gypsum cave in the world?
... that <b id="mwAtE"><a href="./Orda_Cave" id="mwAtI" rel="mw:WikiLink" title="Orda Cave">Orda Cave</a></b> underneath the Ural Mountains in Russia is the largest underwater <a href="./Gypsum" id="mwAtM" rel="mw:WikiLink" title="Gypsum">gypsum</a> cave in the world?