The NANTEN2 Observatory is a southern sky observatory in the Atacama Desert of northern Chile. It is located at an altitude of 4,800 m (15,748 ft) on Pampa la Bola next to Cerro Chajnantor. The observatory is equipped with a millimeter and submillimeter wave telescope that is used for southern sky observations of atomic and molecular spectral lines in 110 GHz to 880 GHz range. It is one of a number of observatories operating at Llano de Chajnantor Observatory.