Relief map of the <b><a href="//commons.wikimedia.org/wiki/Category:Long_Valley_Caldera" title="Category:Long Valley Caldera">Long Valley Caldera</a></b>, Mono County, Eastern California.
USGS
<a rel="nofollow" class="external free" href="https://lvo.wr.usgs.gov/images/maps/CalderaRelief_large.gif">http://lvo.wr.usgs.gov/images/maps/CalderaRelief_large.gif</a>