Castle Lake
...that the origins of Castle Lake in California date to the Pleistocene Era (more than 10,000 years ago) when a glacier carved a basin in the location of the current lake?
...that the origins of <b id="mwCms"><a href="./Castle_Lake_(California)" id="mwCmw" rel="mw:WikiLink" title="Castle Lake (California)">Castle Lake</a></b> <i id="mwCm0">(pictured)</i> in <a href="./California" id="mwCm4" rel="mw:WikiLink" title="California">California</a> date to the <a href="./Pleistocene" id="mwCm8" rel="mw:WikiLink" title="Pleistocene">Pleistocene Era</a> (more than 10,000 years ago) when a <a href="./Glacier" id="mwCnA" rel="mw:WikiLink" title="Glacier">glacier</a> carved a basin in the location of the current lake?