This is a street map of Oruro. The bus station is located on Vacovic and Villarroel streets (Tel: 591-2-527-9535). Here's a really great Oruro City Map with a close-up view of major attractions, also in PDF. This is also a nice Oruro Street Map. The Carnaval Route runs from the Plaza del Folklore all the way down Bolivar street and then onto 6 de Agosto street until Aroma, about 1 block from the bus station (terminal de buses).