What is Rub' al Khali?
[[File:Rub al Khali 002.JPG|thumb|220px|Rub al Khali]] The '''Rub' al Khali''' or '''Empty Quarter''' is a [[desert]] in [[Saudi Arabia]]. It is one of the largest sand [[deserts]] in the world.<ref>{{cite book|title=Saudi Arabia: an environmental overview|year=2008|publisher=Taylor & Francis|isbn=978-0415413879|url=https://books.google.com/books?id=Vacv2wy3yd8C&dq=largest+sand+deserts+Rub%27+al+Khali&pg=PA141|author=Peter Vincent|accessdate=8 April 2011|page=141}}</ref> It covers an area of about 650,000 square kilometres, more than all of [[Holland]], [[Belgium]] and [[France]] together.<ref name=clark>{{cite web |url=http://www.saudiaramcoworld.com/issue/198903/lakes.of.the.rub.al-khali.htm |title=Saudi Aramco World : Lakes of the Rub' al-Khali |first=Arthur |last=Clark |work=saudiaramcoworld.com |date=May–June 1989 |accessdate=April 10, 2011 |archive-date=January 13, 2010 |archive-url=https://web.archive.org/web/20100113114438/http://saudiaramcoworld.com/issue/198903/lakes.of.the.rub.al-khali.htm |url-status=dead }}</ref> Some of the sand dunes are more than 250 metres high.<ref name=clark/> == References == {{reflist}} {{geo-stub}} [[Category:Geography of Saudi Arabia]] [[Category:Deserts of Asia]]