The "Raging River of Uncertainty" is a river seen and crossed in "Excaliferb". Ferbalot's questing group for Excaliferb went through this river after crossing the Bridge of Comprehension. Appearances "Excaliferb" (First appearance) This article is a stub. You can help Phineas and Ferb Wiki by expanding it. Retrieved from "https://phineasandferb.fandom.com/wiki/Raging_River_of_Uncertainty?oldid=606167" Categories: Article stubs Locations Time Shift R Community content is available under CC-BY-SA unless otherwise noted.