Human beings are ignorant and do not know that mercury is a poisonous substance, World War II, Japanese soldiers invaded China, When the Chinese troops retreated, they blew up the lighthouse, German soldiers invaded Crimea, Ukrainian troops blew up lighthouse, Lest the lighthouse become an observatory for the German artillery, This leads to mercury pollution,
(1) Borinquen Lighthouse, Puerto Rico, Earthquakes continued to affect Point Borinquen Lighthouse even in its new location. On August 18, 1925, an earthquake extinguished the light and caused some of the mercury used to revolve the lens to slosh out onto the lantern room floor.
(2) Nakkehoved lighthouse, During the earthquake in 2008, Nakkehoved lighthouse in Gilleleje, Denmark, wobbled so much that some of the 30 litres of mercury leaked out. Naturally, this resulted in an order from the environmental authorities to remove the old mercury in its entirety.
(3) Cape North Lighthouse, An earthquake on July 3, 2010 caused a mercury spill within the lighthouse, resulting in a temporary closure and a cleanup that cost thousands of dollars,
This event will be held from October to December 31, 2022, The 15 lighthouses are Ganjeolgot, Dokdo, Marado, Somamuldo, Socheongdo, Sokcho, Eocheongdo, Yeongdo, Odongdo, Ongdo, Udo, Ulgi, Palmido, Homigot, and Hongdo.
Gadeokdo Lighthouse is located within a national naval base. Therefore, visitors must contact and register with the Busan Regional Maritime Affairs and Port Office prior to visiting the lighthouse. Those who participate in the Lighthouse Experience Program (parties of 6 or less) can spend the night in the innkeeper's room free of charge. In order to use these accommodations, visitors must apply online at the Busan Regional Maritime Affairs and Port's homepage between the 1st and the 8th of the month, one month prior to the desired date of visit.