Chosica station, the construction entered a mountainous area. After four years of work in extremely difficult climatic and terrain conditions, the railway was traversing the slopes of the mountains, building rock shelves, carving 63 tunnels with a total length of over 6,000 m and building a number of bridges.
The construction of Chosica station encountered mountainous terrain, requiring four years of work in challenging climatic and geographical conditions. The railway traversed mountain slopes, constructing rock shelves, excavating 63 tunnels totaling over 6,000 meters, and building bridges.