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The 'Golden Gate' is the strait connecting San Francisco Bay to the Pacific Ocean. Since 1937 it has been spanned by the Golden Gate Bridge.
During the last Ice Age, when sea level was several hundred feet lower, the waters of the glacier-fed Sacramento River and the San Joaquin River scoured a deep channel through the bedrock on their way to the ocean.^[1] It is well known today for its depth and powerful tidal currents from the Pacific Ocean. Many small whirlpools and eddies can form in its waters.
Before the arrival of Europeans in the eighteenth century, the area around the strait and the bay was inhabited by the Ohlone people.

During the summer, the heat in the California Central Valley causes the air there to rise. This can create strong winds which pull cool moist air in from over the ocean through the break in the hills caused by the Golden Gate, commonly causing a stream of dense fog to enter the bay. The strait was surprisingly elusive for early European explorers, presumably due to this persistent summer fog. The strait is not recorded in the voyages of Juan Rodriguez Cabrillo nor Francis Drake, both of whom may have explored the nearby coast in the sixteenth century in search of the fabled Northwest Passage. The strait is also unrecorded in observation by several Spanish galleons returning from the Philippines that laid up in nearby Drakes Bay. These galleons often passed west of the Farallon Islands (27 miles west of the Golden Gate), fearing the possibility of rocks between the Islands and the mainland.


The first recorded observation of the strait was nearly two hundred years later in 1769, by Sgt. José Francisco Ortega, the leader of a scouting party sent north along the peninsula of present-day San Francisco. Ortega reported that he could proceed no further because of the strait. On 5 August 1775 Juan de Ayala and the crew of his ship the ''San Carlos'' became the first Europeans known to have passed through the strait, anchoring in a cove behind Angel Island which is now named in Ayala's honor. Until the 1840s the strait was called the "Boca del Puerto de San Francisco" (Mouth of the Port of San Francisco). On 1 July, 1846, before the discovery of gold in California, the entrance acquired a new name. In his memoirs, John C. Frémont wrote, "To this Gate I gave the name of "Chrysopylae", or "Golden Gate"; for the same reasons that the harbor of Byzantium was called Chrysoceras, or Golden Horn."^[2]
The strait is located at .

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References

1. A similar process created the undersea Hudson Canyon off the coast of New York and New Jersey.
2. Gudde, Erwin G. ''California Place Names'' (2004) University of California Press, London, England. ISBN 0-520-24217-3.

External links

★ National Park Service: Discovery of the Golden Gate

★ Golden Gate 360 Image (QTVR)

★ Golden Gate 360 Image (Java)

★ Digitally Restored Panoramic Composited View of The Golden Gate, Fort Point, and San Francisco Bay as seen from "Land's End" near Sutro Heights, c. 1895.