The Dakota Access Pipeline is a 1,172-mile underground oil pipeline that transports crude oil from the Bakken Formation in North Dakota to a terminal in Illinois. It was developed by Energy Transfer Partners and began operations in June 2017. The pipeline is designed to carry approximately 570,000 barrels of oil per day. The construction of the Dakota Access Pipeline faced significant opposition, particularly from the Standing Rock Sioux Tribe and environmental activists. Concerns were raised about potential oil spills and the impact on water sources, especially the Missouri River. Legal battles and protests highlighted issues of indigenous rights and environmental protection.