Peninsula, western Costa Rica. It is bounded to the west and south by the Pacific Ocean, to the northeast by the Cordillera de Guanacaste, and to the southeast by the Gulf of Nicoya. It measures about 85 mi (140 km) from northwest to southeast. Descendants of the pre-Columbian Chorotega-Mangues Indians reside in villages on the peninsula.
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The Nicoya Peninsula (Península de Nicoya) is a peninsula on the Pacific coast of Costa Rica and lies in the Guanacaste Province in the north, and the Puntarenas Province in the south. It is located at . It varies from 19 to wide and is approximately long, and forms the largest peninsula in the country. It is known for its beaches and is a popular tourist destination. The main transport and commercial centre in the region is Nicoya, one of the oldest settlements in Costa Rica.