Scientists use cosmic rays to peer inside Earth’s most dangerous mountains.
See how volcanologists track the subtle signals that can reveal when an eruption is building, from seismic shifts and satellite radar to drones and gravimeters. The episode’s most striking idea, using cosmic ray muons to image a volcano’s interior, shows how new tools could sharpen warnings and help save lives.
Love Into the Volcano? It’s just the start.
Join now to unlock the whole library — thousands of award-winning documentaries beyond Into the Volcano, from the deep ocean to deep space.
Trending Now
- New shows weeklyFresh documentaries land every week.
- Exclusive originalsAward-winning films you can’t stream anywhere else.
- Watch anywherePhone, tablet, web and TV — pick up where you left off.
- No commitmentNo contract. Cancel in a click.
Pick the plan that’s right for you.
Flexible plans, no contracts.
Thousands of documentaries across nature, history, space, and science.
- Watch in 4K on all your devices
- Download and watch offline
- Stream ad-free — cancel anytime
Thousands of documentaries across nature, history, space, and science.
- Up to 4K
- Offline downloads
- Ad-free
Frequently asked questions
Yes. Every plan unlocks the full library — including all Curiosity Originals like Into the Volcano — in up to 4K, ad-free, on all your devices.
Into the Volcano is a Curiosity Original, exclusive to Curiosity Stream. Plans start at $4.17/month.
Watch on the web, iOS and Android, Roku, Apple TV, Amazon Fire TV, Chromecast, Android TV, and most smart TVs. Start on one device and pick up right where you left off on another.
Curiosity Stream is our streaming service — thousands of documentaries and originals. The Smart Bundle is Curiosity Stream plus four other independent streaming services (Tastemade, Kidstream, Curiosity University, and SOMM TV) on a single subscription.