"They watch the moon" is a long exposure photograph taken by Trevor Paglen in 2010, depicting a classified 'listening station' deep in the forests of West Virginia.
The station is located at the center of the 'national radio quiet zone,' a 13k square mile area that includes portions of West Virginia, Virginia, and Maryland where cell phones, Wi-Fi, and radios are completely banned. The center is believed to be an N.S.A. eavesdropping complex.