Frae Wikipedia, the free beuk o knawledge
Example o the formation o a caldera, the picturs shaw Munt Mazama's eruption timeline

A caldera is a cauldron-lik volcanic featur uisually furmed bi the collapse o land follaein a volcanic eruption. Thay are sometimes confused wi volcanic craters. The wird comes frae Spaingie caldera, an this frae Laitin CALDARIA, meanin "cuikin pot". In some texts the Inglis term cauldron is an aa uised.

In 1815, the German geologist Leopold von Buch veesitit the Las Cañadas caldera o Teide on Tenerife, an the Caldera de Taburiente on La Palma, baith in the Canary Islands. When he published his memoirs he introduced the term caldera intae the geological vocabulary.