Tags: Mountain Pass.
Sico Pass (Spanish: Paso Sico) is a mountain pass on the border between Argentina and Chile. The pass is located on the main divide of the Andes. Administratively it separates the province of Salta in Argentina and the region of Antofagasta in Chile.The pass is served by Chile Route 23 here a gravel road and Argentina Route 51 connecting San Pedro de Atacama on the Chilean side with Catua and San Antonio de los Cobres on the Argentinian side.