Sairecabur Summit Elevation: 5971 m Latitude:                22.72°S Longitude:             67.892°W This chain of andesitic-dacitic volcanoes  along the Chile-Bolivia border contains at  least 10 postglacial centers and stretches  from Escalante volcano on the north to  Sairecábur volcano on the south.  Nomenclature reflecting local usage  results in conflicting names applied to  these features on Chilean and Bolivian  topographic maps. The highest peak,  Sairecábur, is located on the northern  margin of a 4.5-km-wide caldera. The  Cerro Sairécabur edifice rises at the  northern end of a 4.5 km wide caldera  which is breached and intersected on the north-end by a 500 m wide volcanic crater. It is  also the location of the Receiver Lab Telescope at 5,525 m. Postglacial activity began  south of the summit, but most recently produced a pristine lava flow to the NW. An active  sulfur mine is located north of the volcano. Escalante, slightly older than Sairecábur, has  a crater lake at its summit and youthful lava flows on its flanks, and other eruptive  centers have also produced Holocene lava flows. Curinquinca volcano of Pleistocene-  Holocene age lies at the NE end of the complex and Cerro Colorado volcano at the NW  end. Photo: Rolf Cosar Google earth Photo: Rolf Cosar Photo: Rolf Cosar HOME