Book on the Misti Volcano (IMAGE) Geological Society of America Caption This new special paper from the Geological Society of America looks at Peru's Misti volcano and its last Plinian eruption -- which emplaced voluminous tephra-fall, pyroclastic-flow, and lahar deposits ca. 2 ka. Arequipa, located at the foot of the volcano, has a population of over 800,000 people and growing. Misti will erupt explosively again, and it is important to understand the past Plinian eruption. Credit The Geological Society of America Usage Restrictions Educational/non-commercial only. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.