Charles D. Walcott: A Geologist's Paradise. National Geographic Magazine. Vol. 22, pp. 509–521, image on page 519 . 1911 19 Cooling off after a hard climb up through the limestones
Size: 2953px × 1693px
Photo credit: © History and Art Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords:
