Cape Sarichef Light is a lighthouse located on the northwest tip of Unimak Island, approximately 630 miles (1,010 km) southwest of Anchorage, Alaska. The most westerly and most isolated lighthouse in North America, Cape Sarichef Light marks the northwest end of Unimak Pass, the main passage through the Aleutian Islands between the Bering Sea and the Pacific Ocean. When it was first lit on July 1, 1904, it was Alaska's second coastal lighthouse (after Scotch Cap Light), and the only U.S. manned lighthouse on the Bering Sea. Today, the lighthouse is automated, and the beacon is mounted on a skeleton tower.