Changes

You can take a bus #4 (you can find it at Mercado Central, Mercado Campesino or just in Avenida Marcelo Quiroga Santa Cruz (it's better to find this street in Google maps - for now you can't find this name in OSMOpenStreetMaps) which costs 2,5 Bs (about 0,36$) and go with it to the last stop - Cement Factory (Fabrica Nacional de Cemento) which is located at the north northern outskirts of the city just before Parque Cretácico. There is a good place to get a ride even directly to Cochabamba. You can stay just in front of the factory entrance but keep at mind that there is a lot of dust because of this factory.