On the La Oroya ot Cerro de Pasco line, here is the double "Zig-Zag" switchback, with Zig-Zag Abajo (Abajo = below, bottom) and Zig-Zag Arriba (arriba = above, top).
This train is coming from La Oroya. It has just passed the double switchbacks Zig-Zag Abajo and Zig-Zag Arriba that can be seen on the right of the picture and resumes its journey to Cerro de Pasc... (more)
The 2 Zig-zag switchbacks, Zig-Zag Abajo (below) and Zig-Zag Arriba (above) are the only ones on the La Oroya to Cerro de Pasco line. While the train is ready to move uphill at Zig-Zag Arriba, the... (more)