Engraved drawing of the Apurimac Bridge, the suspension bridge over the Santa River in the South American Andes mountain range, Peru, 1853. Courtesy Internet Archive. Note: Image has been digitally colorized using a modern process. Colors may not be period-accurate. ()This image was created from the Internet Archive Books Images project (https://www.flickr.com/photos/internetarchivebookimages/) through a collaboration between the Internet Archive and Gado Images. The descriptions and keywords from this image were created by Gado Images' professional research team.