![](https://www.knowitall.org/sites/default/files/styles/assets/public/kaltura_thumbnails/EG8Xz5fDejfwObGrJPR7Ty_2jxn_d6ioldAvu-MdbKY.jpg.webp?itok=5-V5qY5s)
Volcano | Eye Wonder
Video
The Eye Wonder team takes a look inside a volcano. D.V. visits Mount St. Helens, an active volcano in the continental United States, to learn how tectonic plates make a volcano, and what exactly...