Puyehue Volcano Eruption, Andes, Chile

• 1921–1922, 1929 and 1934 eruptions
On December 13, 1921, Cordón Caulle began a sub-plinian eruption, with a 6.2 kilometres (4 mi) high plume, periodic explosions and seismicity. The eruption had a Volcanic Explosivity Index of 3 and ended on February 1922. In 1929 and 1934 the Cordón Caulle had fissure eruptions, both with an estimated Volcanic Explosivity Index of 2.