Q:Information: - River of Earth is a novel , published in 1940 , by the Appalachian author James Still . - Appalachia is a cultural region in the Eastern United States that stretches from the Southern Tier of New York to northern Alabama, Mississippi and Georgia. While the Appalachian Mountains stretch from Belle Isle (Newfoundland and Labrador) in Canada to Cheaha Mountain in Alabama, the cultural region of Appalachia typically refers only to the central and southern portions of the range. As of the 2010 United States Census, the region was home to approximately 25 million people. - Knott County is a county located in the U.S. state of Kentucky. As of the 2010 census, the population was 16,346. Its county seat is Hindman. The county was formed in 1884 and is named for James Proctor Knott, Governor of Kentucky (18831887). It is a prohibition or dry county. Its county seat is home to the Hindman Settlement School, founded as America's first settlement school. - James Still (July 16, 1906 April 28, 2001) was an American poet, novelist and folklorist. He lived most of his life in a log house along the Dead Mare Branch of Little Carr Creek, Knott County, Kentucky. He was best known for the novel "River of Earth", which depicted the struggles of coal mining in eastern Kentucky. - Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery. In Australia, "colliery" generally refers to an underground coal mine. In the United States "colliery" has historically been used to describe a coal mine operation, but the word today is not commonly used. What entity does 'river of earth' has the relation 'narrative location' with?
A:
appalachian mountains