This ride is a giant mystery, though it IS technically a roller coaster (but mostly a dark ride, and all indoors)
Photo Credit: Yelp
Photo of The Underground
The Underground
3200 Adventureland Dr, Altoona, Iowa 50009 USA
3200 Adventureland Dr, Altoona, Iowa 50009 USA
This ride is a giant mystery, though it IS technically a roller coaster (but mostly a dark ride, and all indoors)
Photo Credit: Yelp