https://geoscan.nrcan.gc.ca/starweb/nrcanphoto/servlet.starweb?path=nrcanphoto/nrcanphotofastlink_f.web&search1=R=61649
Natural Resources Canada, 10 novembre 2019
Honsberger, I. W., Tuffite outcrop, Natural Resources Canada Photo Collection # 2021-941, 2019
Photographie