<p>Written on front: Chelan Falls, Columbia River, Washington, looking south from near the outlet of Lake Chelan. The valley and foreground were occupied by a lobe of the Oganagan [sic] glacier which extended down stream to the even topped terrace. The terrace is 600 feet above the Columbia, and represents a filling during the Glacial epoch which has subsequently been in large part removed.
PH Coll 1415.12</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>
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<a rel="nofollow" class="external text" href="http://content.lib.washington.edu/epicweb/index.html">Glaciers and Landforms Photograph Collection</a>