The AOS and Chajnantor mountains

The ALMA Operations Site (AOS) appears to be nestled into the foot of one the Chajnantor Plateau's many mountain ranges in this tricked perspective shot. The actual distance between the building and mountains can be accurately determined from a different angle (esopia-5216).

The AOS building, located 5000 metres above sea level, houses the ALMA Correlator. This supercomputer enables the Array's many antennas to work together as a single, giant telescope.