Uncle Eyeon's discovery is one of the Adventures of Frrug.
Uncle Eyeon shows Frrug and his friends what he has discovered about iron rocks. He can make things from them by melting them on a fire.
Frrug and his friends decide to go into the cave where Uncle Eyeon found the iron rocks to get some of the rocks.
The cave is a maze - which you follow a track and you can go around the page to the next page.
The cave has prehistoric creatures to avoid.
Can you help Frrug, and his friends find the iron rocks and then get the rocks back to Uncle Eyeon?
When Uncle Eyeon receives the rocks, he makes Frrug and his friends a special friends forever badge.