<a href="https://en.wikipedia.org/wiki/Bull_Pass" class="extiw" title="w:Bull Pass">Bull Pass</a> in the <a href="https://en.wikipedia.org/wiki/McMurdo_Dry_Valleys" class="extiw" title="w:McMurdo Dry Valleys">Dry Valleys</a> of southern <a href="https://en.wikipedia.org/wiki/Victoria_Land" class="extiw" title="w:Victoria Land">Victoria Land</a>.  The Dry Valleys extend over 1,500 square miles and are mostly devoid of snow and ice.
NSF/Josh Landis, <a rel="nofollow" class="external text" href="http://www.linkedin.com/pub/josh-landis/9/8/970">employee 1999-2001</a>
2000
<a rel="nofollow" class="external text" href="http://photolibrary.usap.gov/Portscripts/PortWeb.dll?query&amp;field1=Filename&amp;op1=matches&amp;value=Bullpa1.jpg&amp;catalog=Antarctica&amp;template=USAPgovMidThumbs">Antarctic Photo Library, U.S. Antarctic Program</a>