The Lakeview Gusher was an eruption of hydrocarbons from a pressurized oil well in the Midway-Sunset Oil Field in Kern County, California, in 1910. It created the largest accidental oil spill in history, lasting 18 months and releasing 9 million barrels (1.4×10^6 m3) of crude oil.Midway-Sunset was one of the largest oil reserves in the United States. When drilling commenced, the Lakeview Oil Company expected natural gas and a small amount of oil. Instead, there was a large blowout which overloaded storage tanks.The geyser released more than 1.2 million short tons (1,100,000 t) of crude oil, far more than any other single leak on land or water. Its site is located about a half-mile (800 m) east of the Taft–Maricopa Highway, California Route 33, marked by a Caltrans guide sign and a bronze plaque designated as California Historical Landmark number 485.