What is the meaning of Caldera?

A large crater formed by collapse of the cone or edifice of a volcano.

cauldron

boiler

a type of fish or seafood soup

a winter stew of pork, rutabaga, beans, and rice

caldera

caldera

form removed with the spelling reform of 2005; superseded by kaldera

cauldron

boiler

caldera

feminine singular of caldero

Source: wiktionary.org