Route 181-CH is a

branch line A branch line is a phrase used in railway terminology to denote a secondary railway line which branches off a more important through route, usually a main line. A very short branch line may be called a spur line. Industrial spur An industr ...

road going eastward from

Chile Highway 5 Chile Highway 5 or Route 5 known locally as ''Ruta 5'' is Chile's longest route, . It is part of the Pan-American Highway. Stretch It runs from the Peruvian border connecting with Peru Highway 1 north of Arica to Puerto Montt where it connects ...

Victoria Victoria most commonly refers to: * Victoria (Australia), a state of the Commonwealth of Australia * Victoria, British Columbia, provincial capital of British Columbia, Canada * Victoria (mythology), Roman goddess of Victory * Victoria, Seychelle ...

to Pino Hachado Pass at the border to

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

. Through its length the road passes along or close to the cities and towns of

and Lonquimay. All of the route runs inside La Araucanía Region and between Curacautín and Lonquimay the road runs through

Las Raíces Tunnel Las Raíces Tunnel ( es, Túnel Las Raíces) is a road tunnel in Chile. It is the longest of the very few tunnels in the southern Andes and is the second longest of South America (after the 2006 inauguration of the long tunnel ''Fernando Gómez ...

, Chile's longest tunnel.

See also