The Bolivia–Brazil pipeline (GASBOL) is the longest natural gas pipeline in South America. The 3150 km pipeline connects Bolivia's gas sources with the south-east regions of Brazil. The pipeline was built in two stages. The first 1418 km long stretch, with a diameter varying from 24 to 32 in, started operation in June 1999. It runs from Rio Grande, near Santa Cruz de la Sierra, to Corumbá in Mato Grosso do Sul, reaches Campinas in the state of São Paulo, and continues to Guararema, where it's connected with the Brazilian network. The second 1165 km long stretch, with a diameter varying from 16 to 24 in, which links Campinas to Canoas, near Porto Alegre in Rio Grande do Sul, was completed in March 2000. The maximum capacity of the pipeline is 11 e9m3/a of natural gas. The total cost of the pipeline was US$2.15 billion, of which US$1.72 billion was spent on the Brazilian section and US$435 million on the Bolivian section.