Láscar Summit Elevation:  5592 m  Latitude:                 23.37°S   Longitude:              67.73°W Láscar is the most active volcano of the  northern Chilean Andes. The andesitic-to-  dacitic stratovolcano contains six overlapping  summit craters. Prominent lava flows descend  its NW flanks. An older, higher stratovolcano   5 km to the east, Volcán Aguas Calientes,  displays a well-developed summit crater and  a probable Holocene lava flow near its  summit. Láscar consists of two major edifices;  activity began at the eastern volcano and then  shifted to the western cone. The largest  eruption of Lascar took place about 26,500  years ago, and following the eruption of the Tumbres scoria flow about 9000 years ago,  activity shifted back to the eastern edifice, where three overlapping craters were  formed. Frequent small-to-moderate explosive eruptions have been recorded from  Láscar in historical time since the mid-19th century, along with periodic larger eruptions  that produced ashfall hundreds of kilometers away from the volcano. The largest  historical eruption of Láscar took place in 1993, producing pyroclastic flows to 8.5 km  NW of the summit and ashfall in Buenos Aires. (Global Volcanic Program)  click on pictures to enlarge HOME