<p>Written on front: Cascade Pass, Cascade Range, Washington, Cliffs of hornblendic gneiss immediately south of the pass, about 3,000 feet in height, exhibiting vertical jointing.
PH Coll 1415.17</p>
<bdi><a href="https://en.wikipedia.org/wiki/en:Bailey_Willis" class="extiw" title="w:en:Bailey Willis"><span title="American geologist">Bailey Willis</span></a>
</bdi>
<a rel="nofollow" class="external text" href="http://content.lib.washington.edu/epicweb/index.html">Glaciers and Landforms Photograph Collection</a>