Last updated on April 21, 2014 at 11:58 EDT

The ALMA Array of Antennas on Chajnantor

October 3, 2011

Distant view of the ALMA antennas on the Chajnantor Plateau at an altitude of 5000 metres above sea level. On the left is the Array Operations Site (AOS) Technical Building, and in the centre the antennas.  Credit:  ALMA