Junin de los Andes
Junin de los Andes is a town in Southwest Argentina.
For hitching North/West, the Axion petrol station is a good place to start.
North towards Chile on Paso Mamuil Mamal & Volcan Lanin
RP23 and later RP60 brings you to Volcan Lanin and the Villarica region in Chile. The route can be hitchhiked quite easily as many tourists go for it to circle back to Bariloche. If possible take a day time and climb at least a part of Volcan Lanin.
North towards Alumine
After Malleo, RP23 is quickly getting worse. You can continue on dirt roads to Villa Pehuenia and later Chile. Most people will take the turnoff to Volcan Lanin and continue on RP60, so expect to spend some time in Malleo.
West towards Lake Huechulafquen and Piedra Mala
RP61 is a dead end dirt road with very low traffic. There is bus going along the road, however, it will take several hours to Piedra Mala. You might not have another option, as most cars are packed full here.
South towards San Martin de los Andes and Bariloche on RN40
If you're coming from north, traffic and public transport service will increase seriously after Junin de los Andes and even more after San Martin de los Andes.