File:Aurora, CO, USA - panoramio (1).jpg

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English operator: Panoramio described at URL: https://web.archive.org/web/20161015070511/http://www.panoramio.com/photo/35161595 determination method: SHA-1

operator: Panoramio described at URL: https://web.archive.org/web/20161028014316/http://www.panoramio.com/photo/106864208 determination method: SHA-1

English operator: Panoramio described at URL: https://web.archive.org/web/20161014171958/http://www.panoramio.com/photo/35163381 determination method: SHA-1

English operator: Panoramio described at URL: https://web.archive.org/web/20161015060252/http://www.panoramio.com/photo/36541965 determination method: SHA-1