To the Center of the Earth The Backyardigans : Season 3 Episode 7
TV-Y Treehouse TV 23m
Aired: March 7th, 2008 @ 10:00 AM EST on Treehouse TV
It's an underground adventure set to 1930's Small Band as Professors Uniqua and Pablo use their inventions to take Tyrone to the center of the Earth to retrieve his lucky penny.
