RIGHT - 73.7 MILE (UPPER) CC=15. MARGINAL -   PLANT ENCROACHMENT.- 1975. NPS,  BORDEN.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/50693818@N08">Grand Canyon National Park</a>
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/grand_canyon_nps/16377516358/">R73.7U - RIGHT - 73.7 MILE (UPPER)</a>