Did you know that Dr. Sivana, the world's maddest scientist, invaded the Rock of Eternity? If you read 2014's Thunderworld adventure, you may have thought that that was the first time Sivana stepped foot on the Rock of Eternity. But you may not have known that the first time Sivana invaded the Rock was in Captain Marvel Adventures #100! I didn't know that until I read that issue!!
In Captain Marvel Adventures #100, Sivana tricks Shazam into giving him the shazamium bracelet - thus allowing Sivana the abilities only the wizard Shazam has! Sivana quickly goes to the Rock of Eternity where he plans to rule not only the world, but the universe as well!
I thought the only time Sivana invaded the Rock of Eternity was when I read Thunderworld! But now I know that Sivana invaded the Rock in the golden age of Captain Marvel in issue #100 of Captain Marvel Adventures!