Featuring from left to right: Sairecabur, Licancabur, Paso Jama road, Cerro Toco (ACT and Polarbear live there), Chajnantor (ALMA, APEX, ASTE and Nanten2 live there), the ALMA Operations Support Facility (OSF) is on the slope leading up to those hills, then Acamarachi (aka Pili), Agua Caliente and Lascar, all hidden in the clouds.