Cliff Clark

<strong>Quelle:</strong> <bdi><a href="https://en.wikipedia.org/wiki/en:Claude_Monet" class="extiw" title="w:en:Claude Monet"><span title="French painter (1840–1926)">Claude Monet</span></a> </bdi> - <a rel="nofollow" class="external free" href="http://www.clarkart.edu/Collection/1522">http://www.clarkart.edu/Collection/1522</a>

<strong>Quelle:</strong> <a rel="nofollow" class="external text" href="https://www.geograph.org.uk/profile/8002">brian clark</a> - From <a rel="nofollow" class="external text" href="https://www.geograph.org.uk/photo/589806">geograph.org.uk</a>

<strong>Quelle:</strong> <a rel="nofollow" class="external text" href="https://www.geograph.org.uk/profile/116">Martin Clark</a> - From <a rel="nofollow" class="external text" href="https://www.geograph.org.uk/photo/3345">geograph.org.uk</a>

<strong>Quelle:</strong> Ott Toomet - <span class="int-own-work">Self-photographed</span>

<strong>Quelle:</strong> <a href="https://en.wikipedia.org/wiki/U.S._Geological_Survey" class="extiw" title="en:U.S. Geological Survey">U.S. Geological Survey</a> - <a rel="nofollow" class="external free" href="https://vulcan.wr.usgs.gov/Volcanoes/PacificNW/AGU-T106/hood.html">http://vulcan.wr.usgs.gov/Volcanoes/PacificNW/AGU-T106/hood.html</a>

<strong>Quelle:</strong> New Zealand Government, Office of the Governor-General - <a rel="nofollow" class="external free" href="https://gg.govt.nz/image-galleries/6885/media?page=3">https://gg.govt.nz/image-galleries/6885/media?page=3</a>

<strong>Quelle:</strong> <a rel="nofollow" class="external text" href="https://www.geograph.org.uk/profile/39693">Gav Clark</a> - From <a rel="nofollow" class="external text" href="https://www.geograph.org.uk/photo/1549852">geograph.org.uk</a>