Rangeland in regions too dry to support a forest, but not dry enough to be a desert. Pampas are the fertile South American lowlands that include the Argentine provinces of Buenos Aires, La Pampa, Santa Fe, Entre Ríos and Córdoba, most of Uruguay, and the State of Rio Grande do Sul, in the southernmost end of Brazil covering more than . These vast plains are only interrupted by the low Ventana and Tandil hills near Bahía Blanca and Tandil (Argentina), with a height of and respectively. The climate is mild, with precipitation of to , more or less evenly distributed through
South American Rugby Championship for those years. In 2018, the format of the tournament was changed once again: six teams (Argentina, Brazil, Chile, Colombia, Paraguay and Uruguay) would play in the top division, which was renamed to "South American Six Nations". Argentina is the most dominant nation at the South American Championships, winning 34 of 40 editions, as well as the two editions of the CONSUR Cup, and the two editions of the Sudamérica Rugby Cup. Uruguay won the tournament four times (1981, 2014, 2016 and 2017), while Chile (2015) and Brazil (2018) won the South American title once. The first edition of the