2K views · 48 reactions | Sound the foghorn ⟡ Robert Egger's THE LIGHTHOUSE starring Robert Pattinson and Willem Dafoe opens next Thursday, 6 February! | Cinema Nova | Facebook

461K views · 762 reactions | There is an urban legend among Qingdao's older generations that on foggy days, they can hear "sea cows." But in fact, this is the sound of Tuandao Lighthouse's foghorn. The lighthouse is situated in the southwest corner of Qingdao and acts as a sentinel for Jiaozhou Bay, which flows into the Yellow Sea. It was first built in 1900 by the Germans. #TidesofChange | CGTN | Facebook

131 years ago on this day (Nov 5, 1890), the fog horn at Old Mackinac Point Lighthouse sounded for the first. Each lighthouse had a distictive signal and the signal at Old Mackinac Point was a 5-second blast, followed by 17 seconds of silence, followed by another 5-second blast, followed by 33 seconds of silence. Repeat. This aid to navigation was replaces by the lights and horn on the nearby Mighty Mac. | MightyMac.org - The Mackinac Bridge & Straits of Mackinac