The European Southern Observatory (ESO) Council has selected Cerro Armazones in Chile as the baseline site for the planned 42-meter European Extremely Large Telescope (E-ELT).

Cerro Armazones is a mountain at an altitude of 3060 meters in the central part of Chile's Atacama Desert, some 130 kilometers south of Antofagasta town and about 20 kilometers from Cerro Paranal, home of ESO's Very Large Telescope.