9781422286074

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East South-Central States: Kentucky, Tennessee

famous for its limestone caves. Mammoth Cave, the longest cave sys- tem in the world, has tunnels that stretch for about 400 miles (644 km) under the region. Northwest of the Pennyroyal Plateau lies the Western Coal Field.

called The Knobs. It is named for hun- dreds of separate, cone-shaped hills found in the area. The Pennyroyal Plateau spreads across most of the state’s southern border. Its name comes from an herb that grows there. This region is

A coal processing facility in the Western Coal Field region of Kentucky.