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Filters Date Types (for Date Range) Contacts U.S. Geological Survey Tag Types Place (22) label (22) Tag Schemes http://www.sciencebase.gov/vocab/undefined/DenverHistoryPhotoLibrary/PhotoMedia (22) View Results as: JSON ATOM CSV

Tertiary limestone cliff and road. Arecibo or Ponce County, Puerto Rico. 1922. Tertiary limestone cliff and road at right just south of cut in image 578; view along road from Arecibo to Ponce. Arecibo or Ponce County, Puerto Rico. February 1922. Categories: Image; Tags: Arecibo County, Puerto Rico, Ponce County, Puerto Rico, photo print South edge of the rough sink hole country. Aguadilla County, Puerto Rico. 1922. South edge of the rough sink hole country viewed from the trail from the reservoir site to Quebradillas, showing line of cliffs marking termination of reef limestone. Aguadilla County, Puerto Rico. February 1922. Categories: Image; Tags: Aguadilla County, Puerto Rico, photo print « 1 2