Viñales Valley is a karstic depression in Cuba. The valley has an area of 132 km2 (51 sq mi) and is located in the Sierra de los Órganos mountains (part of Guaniguanico range), just north of Viñales in the Pinar del Río Province. In 1999, the valley was inscribed on the UNESCO World Heritage List as a cultural landscape because of its use of traditional tobacco-growing techniques.
Tobacco and other crops are cultivated on the bottom of the valley, mostly by traditional agriculture techniques that have been in use for several centuries. These techniques allegedly make for higher-quality tobacco than if mechanical methods are used. The valley is dotted with small farms and villages which have been occupied since the time of the 'conquistadores', maintaining some vernacular colonial-era architecture. The culture of the valley was likewise influenced by a mixture of cultures: indigenous peoples, African slaves, and the Spanish colonizers.
Many caves dot the surrounding hillfaces, including Cueva del Indio and Cueva de José Miguel. The conspicuous limestone mounds rising like islands from the bottom of the valley are called mogotes. They can be up to 300 m tall.en.wikipedia.org