The first works that will transform the old railway tunnel, located on the border with Chile, into a road, will begin to take concrete form from the first days of September, according to estimates by the national director of Roads, Guillermo Amstutz.

https://www.mendovoz.com/actualidad/provinciales/2021/6/24/en-tres-meses-comenzarian-las-obras-del-tunel-caracoles-en-el-limite-con-chile-102033.html