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black steel tower photography
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black steel tower photography

Watch tower gray sky

A map markerAlcatraz Island, San Francisco, United States
Calendar outlinedPublished on SafetyFree to use under the Unsplash License
Hd grey wallpapersalcatraz islandsan franciscounited statestowerarchitectureguard towerstairstairsspiral stairsguard railvdlightpostobservationMetal backgroundsHd blue wallpapersBeach images & picturesantennaelectrical devicebuildingFree pictures

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