Want better video quality? Sign in to access HD streaming!


Want to watch better-quality PBS Video? Sign in to access HD streaming!

When you sign in, you'll become a PBS Insider and we'll share your contact information with your local PBS station. You may receive updates to help you stay connected with what's happening online and in your community. Privacy Policy


Thundereggs: Oregon's State Rock

  • Aired: 10/31/2013
  • 06:40
  • Rating: TV-G
Oregon's high desert from Madras to the Ochoco Mountains has some of he largest deposits of thundereggs in the world. Rock hounds slice them open to find agate, jasper, opal, sometimes in ornate patterns, hidden inside, the first people in history to ever see the formations since they were encased in cooling lava 60 million years ago. Thundereggs were named the state rock of Oregon in 1965.
Embed Options
Close ×
Thundereggs: Oregon's State Rock
Thundereggs: Oregon's State Rock
Rock hounds flock to Oregon from around the world to find thundereggs.
Please copy this text to your clipboard.
Problems Playing Video ?
PBS Anywhere - funder area
Related Links:


Watch videos from your favorite PBS KIDS shows with the PBS KIDS Video app for your tablet or phone.

Downton Abbey Collection

Bring home the complete collection: DVDs, Blu-rays, books, gifts and more. Visit ShopPBS.


helps all of us explore new worlds and ideas. Give Now