https://geoscan.nrcan.gc.ca/starweb/nrcanphoto/servlet.starweb?path=nrcanphoto/nrcanphotofastlink_f.web&search1=R=55271
Natural Resources Canada, juillet 1989
Last, William M., Effloresence, Natural Resources Canada Photo Collection # 1999-045R, 1989
Photographie