Wikipedia
The Diablada or Danza de los Diablos , is a dance characterized by the mask and devil suit worn by the performers. The dance is a mixture of religious theatrical presentations brought from Spain and Andean religious ceremonies such as the Llama llama dance in honour of the Uru god Tiw (protector of mines, lakes, and rivers), and the Aymaran miners' ritual to Anchanchu (a demon spirit of caves and other isolated places in Bolivia and Perú).
The Diablada's origins are in the Altiplano region of the Andes mountain range, but its exact birthplace is disputed by scholars. The dance is an important part of the cultural traditions of the cities of Oruro in Bolivia, Puno in Peru, and La Tirana in Chile—it is also not uncommon for the dance to be used as a symbol for these country's indigenous cultural identity.