San Francisco
Alcatraz
Hyde Street Ships
Muir Woods
Henry Cowel State Park
Around the city
Lava Beds National Monument
Modoc Indian Wars happened here. These are natural volcanic rock trenches: A sea of lava rocks: Ice in the cave: Ladders to get in and out: This cave was lit on the walkways inside: Natural light from the opening: Our phones are lighting up this cavern:
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