<P> Lascar is a stratovolcano, is the most active volcano of the northern Chilean Andes . The largest eruption of Lascar took place about 26,500 years ago, and following the eruption of the Tumbres scoria flow about 9,000 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 Lascar in historical time since the mid-19th century, along with periodic larger eruptions that produced ash and tephra fall up to hundreds of kilometers away from the volcano . The largest eruption of Lascar in recent history took place in 1993, producing pyroclastic flows as far as 8.5 km (5 mi) northwest of the summit and ash fall in Buenos Aires, Argentina, more than 1,600 km (994 mi) to the southeast . The latest series of eruptions began on 18 April 2006 and was continuing as of 2011 . </P> <P> Chiliques is a stratovolcano located in the Antofagasta Region of Chile, immediately north of Cerro Miscanti . Laguna Lejía lies to the north of the volcano and has been dormant for at least 10,000 years, but is now showing signs of life . A January 6, 2002, nighttime thermal infrared image from ASTER revealed a hot spot in the summit crater, as well as several others along the upper flanks of the volcano's edifice, indicating new volcanic activity . Examination of an earlier nighttime thermal infrared image from May 24, 2000, showed no such hot spots . </P> <P> Calbuco is a stratovolcano in southern Chile, located southeast of Llanquihue Lake and northwest of Chapo Lake, in Los Lagos Region . The volcano and the surrounding area are protected within Llanquihue National Reserve . It is a very explosive andesite volcano that underwent edifice collapse in the late Pleistocene, producing a volcanic debris avalanche that reached the lake . At least nine eruptions occurred since 1837, with the latest one in 1972 . One of the largest historical eruptions in southern Chile took place there in 1893--1894 . Violent eruptions ejected 30 - cm bombs to distances of 8 km from the crater, accompanied by voluminous hot lahars . Strong explosions occurred in April 1917, and a lava dome formed in the crater accompanied by hot lahars . Another short explosive eruption in January 1929 also included an apparent pyroclastic flow and a lava flow . The last major eruption of Calbuco, in 1961, sent ash columns 12--15 km high and produced plumes that dispersed mainly to the southeast and two lava flows were also emitted . A minor, four - hour eruption happened on August 26, 1972 . Strong fumarolic emission from the main crater was observed on August 12, 1996 . </P> <P> Lonquimay is a stratovolocano of late - Pleistocene to dominantly Holocene age, with the shape of a truncated cone . The cone is largely andesitic, though basaltic and dacitic rocks are present . It is located in La Araucanía Region of Chile, immediately southeast of Tolhuaca volcano . Sierra Nevada and Llaima are their neighbors to the south . The snow - capped volcano lies within the protected area Malalcahuello - Nalcas . The volcano last erupted in 1988, ending in 1990 . The VEI was 3 . The eruption was from a flank vent and involved lava flows and explosive eruptions . Some fatalities occurred . </P>

Which of the following areas is included in the ring of fire