A signboard near the station of Ticlio. The green sign says, in
Spanish: "TICLIO - TOURISTIC PLACE / 4818
amsl / World's highest railroad crossing", although it has been surpassed since
^Reinhard, Johan; Ceruti, Constanza (2010). Inca Rituals and Sacred Mountains: A Study of the World's Highest Archaeological Sites. Institute of Archaeology Press.
ISBN9781931745765.
^McIntyre, Loren (April 1987). "The High Andes". National Geographic. 171 (4). National Geographic Society: 422–460. (includes description and photos of
Aucanquilcha summit road and mine)
^West, John B. (July 6, 2004). "Highest Permanent Human Habitation". High Altitude Medicine & Biology. 3 (4): 401–407.
doi:
10.1089/15270290260512882.
PMID12631426.
^"Plaza Grande" (in Spanish). Sitio Oficial Turístico de Quito. Archived from
the original on October 6, 2008. Retrieved August 1, 2008. {{
cite journal}}: Cite journal requires |journal= (
help)