World map of proposed locations of the Thirty Meter Telescope by CMG Lee: Orange denotes lights and blue denotes elevation (land and water separately). The map is based on http://commons.wikimedia.org/wiki/File:Earth_lights_vs_population_density.png and Chilean coordinates are from http://gmto.org/Resources/GMT-ID-01466-Chapter_5_Site_Evaluation.pdf page 8.
Earth lights vs population density.png
cmglee, NASA