https://geoscan.nrcan.gc.ca/starweb/nrcanphoto/servlet.starweb?path=nrcanphoto/nrcanphotofastlink_f.web&search1=R=56161
Natural Resources Canada, 2004
Sanford, B. V., Miniature cylindrical column in the Covey Hill Formation. Partially exposed cross-sectional view of column., Natural Resources Canada Photo...
Photographie