No hay vuelta atrás

A trail (also track, byway) is a path with a rough beaten or dirt/stone surface used for travel. Trails may be for use only by walkers and in some places are the main access route to remote settlements. Some trails can also be used for hiking, cycling, or cross-country skiing and less often for moving cattle herds and other livestock.

Curitiba (Tupi: "Pine Nut Land"^{[citation needed]}, Portuguese pronunciation: [kuɾiˈtibɐ] or [kuɾiˈtʃibɐ]) is the capital of the Brazilian state of Paraná. It is the largest city with the biggest economy of both Paraná and southern Brazil. The population of Curitiba numbers approximately 1.75 million people (8th largest nationwide) and the latest GDP figures for the city surpass US$61 billion (ranking 4th nationwide) according to IBGE (2008). Its metropolitan area comprises 26 municipalities with a total population of over 3.2 million (IBGE estimate in 2006).

Curitiba is an important cultural, political and economic centre in the country. The city sits on a plateau at 932 metres (3,058 ft) above sea level. It is located 105 kilometres (65 mi) west of the sea port of Paranaguá and is served by the Afonso Pena International and Bacacheri airports. The city hosts the Federal University of Paraná, established in 1912, one year before electric streetcars were first deployed.

Curitiba's rapid expansion was based on the cattle trade, the city being located half-way between the cattle breeding country to the south and the markets to the north. Waves of European immigrants started arriving after 1850, mainly Germans, Italians, Poles and Ukrainians, contributing to the economic and cultural development of the city. Nowadays, only smaller numbers of foreign immigrants arrive, mainly from Middle Eastern and South American countries, but there is a substantial inward flow of Brazilians from other states of the country (approximately half the population of Curitiba was not born in the city).