Driftless Area National Wildlife Refuge
... that Driftless Area National Wildlife Refuge in Iowa has rare ice age snails that survive living on rock formations cooled from underground ice?
... that <b id="mwAjw"><a href="./Driftless_Area_National_Wildlife_Refuge" id="mwAj0" rel="mw:WikiLink" title="Driftless Area National Wildlife Refuge">Driftless Area National Wildlife Refuge</a></b> in <a href="./Iowa" id="mwAj4" rel="mw:WikiLink" title="Iowa">Iowa</a> has rare <a href="./Ice_age" id="mwAj8" rel="mw:WikiLink" title="Ice age">ice age</a> <a href="./Discus_macclintocki" id="mwAkA" rel="mw:WikiLink" title="Discus macclintocki">snails</a> that survive living on <a class="mw-redirect" href="./Karst_topography" id="mwAkE" rel="mw:WikiLink" title="Karst topography">rock formations</a> cooled from underground ice?