I am a geographical feature that appears circular, yet my impacts are far from trivial. My formation tells tales of volcanic might. What am I?

Category: Geography · Difficulty: hard

Hint: I am formed by the collapse of a volcano after an eruption.

Answer

Caldera

Explanation

A caldera is a large depression formed following the eruption of a volcano, often resulting in a circular shape.

This is a hard geography riddle — a tricky one that takes a little thought. The answer is Caldera.

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