farther east of Llullaillaco lies the Miocene Cerro Rosado volcano (). This volcano has erupted dacitic lava flows during the Pliocene-Quaternary on its northeastern and southern flanks. east of Llullaillaco, and behind Cerro Rosado, lies the Salar de Llullaillaco ( ), a salt pan with warm springs at its western and southwestern shores and three abandoned borate mines: Mina Amalia and the salt mines Mina Luisa and Mina Maria. Mitral mountain () lies southwest of Llullaillaco and is of Miocene age. It features an eroded crater that opens to the northwest. Iris mountain () north of Llullaillaco is constructed of Pliocene rocks. Other volcanoes in the neighbourhood are Dos Naciones, Cerro Silla, and Cerro 5074. Llullaillaco is associated with a local crustal upwarp.