What is "ticlio"

Ticlio (or Anticona) is a mountain pass and the highest point of the central road of Peru (km 120), in the Andean mountains, reaching a height of 4,818 m. It used to be a railway crossing loop on the Ferrocarril Central Andino (FCCA) in Peru whose main claim to fame was being the highest railway junction in the world. The railway now crosses the pass through a nearby tunnel at a lower elevation (4783 m) which enters a different valley than the highway on the eastern side of the pass.