<a href="https://en.wikipedia.org/wiki/Belknap_Crater" class="extiw" title="w:Belknap Crater">Belknap Crater</a>, <a href="//commons.wikimedia.org/wiki/Oregon" title="Oregon">Oregon</a>
USGS Photo by Lyn Topinka
1984
<a rel="nofollow" class="external text" href="https://web.archive.org/web/20000902062743/http://vulcan.wr.usgs.gov/Imgs/Jpg/Belknap/belknap.jpg">Cascades Volcano Observatory</a>