While Brazil has a relatively large number of vineyards, a large part of them produce table grapes, and only some produce Brazilian wine. As much of Brazil is close to the equator, traditional rules of thumb brand most of the country unsuitable for viticulture, due to too much heat and humidity. Most of the wine production of Brazil is concentrated in the south of the country, away from the equator, in the state of Rio Grande do Sul, around 29th parallel south, which is close to Uruguay and Argentina. In that area, many of the vineyards are also located in cooler high and hilly locations, to a large extent in Serra Gaúcha region.