La Quiaca is a small city in the north of the province of Jujuy, Argentina, on the southern bank of the La Quiaca River, opposite the town of Villazón, Bolivia. It lies at the end of National Route 9, 289km (180mi) from San Salvador de Jujuy (the provincial capital), and at an altitude of 3,442m (11,293ft) above mean sea level.