https://joy.videvo.net/videvo_files/video/free/2017-06/large_watermarked/161022_093_SanFrancisco_1080p_preview.mp4 Small Boat Passing Alcatraz Island A shot of a small yellow boat passing Alcatraz Island. 1080pAlcatrazalcatraz islandamericaamericanboatcaliforniacityFranciscosailsailingsanshipsiliconurbanUSusavalley