Two rivers, the Xibi Xibi and the Grande, cross San Salvador de Jujuy, capital of the Province. The Quebrada de Humahuaca starts there, the way of ascent to the Puna, offering a landscape of changing shades of colours. Built on an uneven terrain, it is a nice calm place which follows the tranquil rhythm of local life. The city still looks colonial. It is an administrative, financial and cultural centre with sugar-making industries and railway industries, good communications to Bolivia by railway, Pan-American route and airport. Its climate is influenced by many factors, mainly, the presence of mountain ranges which do not allow eastern humid winds to come through and therefore make the weather very dry. The high –sometimes stifling- temperatures are due to its latitude (the Tropic of Capricorn goes through it). The fauna is adapted to weather conditions, mainly guanacos, llamas, alpacas, red foxes, condors, etc.