The Toothrock Viaduct on the <a href="https://en.wikipedia.org/wiki/Historic_Columbia_River_Highway" class="extiw" title="en:Historic Columbia River Highway">Columbia River Highway</a>, <a href="https://en.wikipedia.org/wiki/Oregon" class="extiw" title="en:Oregon">Oregon</a>, <a href="https://en.wikipedia.org/wiki/United_States" class="extiw" title="en:United States">United States</a>.
(This is a low-resolution file of the image, which could greatly benefit from upload of a higher-resolution version.)
Unknown author<span style="display: none;">Unknown author</span>
circa 1920 <div style="display: none;">date QS:P,+1920-00-00T00:00:00Z/9,P1480,Q5727902</div>
<a href="https://en.wikipedia.org/wiki/National_Scenic_Byway" class="extiw" title="w:National Scenic Byway">National Scenic Byways Program</a><br><a rel="nofollow" class="external free" href="http://www.byway.org/explore/activities/road-biking/stories/74261">http://www.byway.org/explore/activities/road-biking/stories/74261</a>