(in explore)
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Perched on a cliff on the central California coast, 50 miles south of San Francisco, the 115-foot Pigeon Point Lighthouse, one of the tallest lighthouses on the West Coast, has been guiding mariners since 1872. Its five-wick lard oil lamp, and first-order Fresnel (pronounced fra-nel) lens, was first lit at sunset, November 15, 1872. Although the original Fresnel lens is no longer in use, the lighthouse is still an active U.S. Coast Guard aid to navigation using an automated LED (light-emitting diode) beacon.
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© EVAN READER
Copyright for this photo belongs solely to EVAN READER, GREATEST PAKA PHOTOGRAPHY. Images may not be copied, downloaded, or used in any way without the express written permission of the photographer.
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