Salsa term: Vallenato (Style of music)

Vallenato comes fom "valle" and "nato" with the meaning: born in the valley. It refers to the music. One side says it is the valley between Pico Cristobal Colon and the Serrenia De Perija in the northeast of Columbia. The other side says it's the valley "Valle de Upar". Whatever ? it is a very popular columbian dance and rhythm with afro-carribbean and European (Accordion) influences.