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At Sweeney
Ridge, on November 4, 1769, hunters from Portola's expedition sighted what
would become one of the world's greatest seaports. Today, monuments mark
the "Portola Discovery Site." Hikes along the ridge also pass the ruins of
a former U.S. Army Nike missile control station. Nike Missile Site SF-51,
which helped protect the peninsula from 1956 to 1974, held three radar
dishes to find, track and guide missiles (based at
Milagra Ridge) to enemy aircraft. |