Wikimedia Commons: Lakeview #1 oil gusher, Kern County, California, USA, after the well had partially subsided, the derrick removed, and the well surrounded by a sandbag berm. Photo by W.C. Mendenhall, US Geological Survey, 1910

The Lakeview Gusher Number One was an immense out-of-control pressurized oil well in the Midway-Sunset Oil Field in Kern County, California, resulting in what is regarded as the largest oil spill in history, lasting 18 months and releasing 9 million barrels (1.4×106 m3) of crude oil. In what was one of the largest oil reserves in America, pressure built to an extreme due to the quantity of crude oil in the area. (wikipedia)