The Very Large Array is a centimeter-wavelength radio astronomy observatory.
Cosmic radio waves are billions of a billion times fainter than radio waves used to broadcast information on Earth. Radio telescopes must be placed where they can collect these faint cosmic radio waves without any radio interference from humans or nature.
The Plains of San Agustin in New Mexico, northwest of Socorro, is a flat stretch of desert far from major cities. The Plains are ringed by mountains, which act like a natural fortress of rock that keeps out much of the radio interference from cities even hundreds of miles away.