Caldera vs crater: collapse bowls are not just bigger holes

A 4-beat faceless video outline for “Caldera vs crater: collapse bowls are not just bigger holes” in the Volcanoes explained niche, derived from caption timing of 2 reference videos.

Angles

• GeologyHub collapse case + Kurzgesagt scale: caldera = roof failure over emptied magma, not just a wide crater
• Definitions side by side with a simple bowl diagram
• Miyakejima-style collapse sequence as the narrative spine
• Supervolcano calderas as the upper end, labeled carefully

Beat-by-beat structure

1. Hook (0:00–0:30): a mountain that loses its top overnight — crater or caldera?
2. Definitions (0:30–2:00): crater vs collapse caldera.
3. Case sequence (2:00–5:00): magma withdraws → roof fails → bowl remains.
4. Scale + recap. Original narration only.

Reference videos

• The Mystery of Miyakejima Volcano's Caldera Collapse; The Eruption was Seemingly Too Small dq44IaCQlxk
• The Biggest Eruptions That Changed Earth Forever fXb02MQ78yQ

Method

yt-dlp VTT captions (manual/uploader only) → timed beat heuristics → editorial topic synthesis (no ASR). Structure only; write original narration.