Gimbal shot booming up from purple flowers to the main cellblock on Alcatraz Island in the San Francisco Bay

gimbal alcatraz alcatraz island san francisco cellblock san francisco bay 4k bay area sf alcatraz prison coastal plants purple flowers federal prison prison california state park the rock flowers ruins northern california norcal gardens foliage plants seaside foliage the city marine plants penitentiary travel tourism ferry cruise ferry ferry boat national park service golden gate golden gate national recreation area national historic landmark marine wildlife greenery historic ruins fauna flora marine habitat prison guards bay area highlights us army military grounds bird sanctuary protected gardens bird habitat