The wine-growing area Valle de Colchagua is located 130 kilometres south of the Chilean capital Santiago de Chile in the Valle Central. Together with the similar Cachapoal area, it forms the southern half of the Valle de Rapel region. The centre is the city of Rancagua, known for its hot thermal springs. Colchagua is crossed by the Río Tinguiririca, which makes it possible to grow wine. The hot Mediterranean climate is tempered by cool air currents from the Pacific Ocean to the west. In 1996, the first Chilean wine route "Ruta del vino de Colchagua" was created here. A wine-tourist attraction is the steam locomotive-driven train "Tren del Vino", which runs through the vineyards.