What is another word for caldera?
Pronunciation: [kɒldˈe͡əɹə] (IPA) 
A caldera is a large volcanic crater, typically formed by a massive eruption or collapse of a volcano's summit. There are several synonyms for the term caldera, including cauldron, crater, depression, hole, pit, and basin. Each of these words denotes a natural landform that is created by geological processes, and they all share common characteristics with a caldera. While a cauldron implies a boiling pot, a crater and a depression both suggest a dip or hollow, and a hole and a pit both describe a cavity in the earth. Lastly, a basin is a large, rounded, and often surrounding depression that collects water or other substances.
