Sirte Basin
...that Libya's Sirte Basin—which in some places lies more than 47 metres below sea level—contains roughly 80% of the country's known crude oil reserves?
...that <a href="./Libya" id="mwCBg" rel="mw:WikiLink" title="Libya">Libya</a>'s <b id="mwCBk"><a href="./Sirte_Basin" id="mwCBo" rel="mw:WikiLink" title="Sirte Basin">Sirte Basin</a></b><span id="mwCBs" typeof="mw:Entity">—</span>which in some places lies more than 47 metres below <a href="./Sea_level" id="mwCBw" rel="mw:WikiLink" title="Sea level">sea level</a><span id="mwCB0" typeof="mw:Entity">—</span>contains roughly 80% of the country's known <a class="mw-redirect" href="./Crude_oil" id="mwCB4" rel="mw:WikiLink" title="Crude oil">crude oil</a> reserves?