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00:09:00
Buried in a cove that later became downtown San Francisco, a Gold Rush-era cargo ship lay lost and forgotten underground until it was exposed by construction in 2013. Marine archeologists and historians share stories of the discovery, excavation, and preservation of this humble yet significant 23-foot maritime artifact, unique among the oldest intact boats in the United States.

00:04:58
Obsidian points, Spanish terra-cotta tiles, Prohibition-era liquor bottles—history lies buried underfoot in the Presidio, one of the earliest settlements in San Francisco, occupied in turn by the Ohlone Indians, Spanish, Mexicans, and the U.S. Army. Archaeologist Kari Jones shares tales of recent digs and discoveries in this national park, and explains why most artifacts are dug up only to be reburied.