CoasterForce Guide to the Barrel Roll - Table of Elements series - YouTube
Outlaw Run – Double Barrel Roll – Loop – CoasterCritic
Wooden Coaster Adds First Barrel Roll - Mt. Olympus Water & Theme Park
SeaWorld San Diego's high-flying Emperor roller coaster is now open - The San Diego Union-Tribune
Medusa - Ride Review Photo
bioreconstruct on Twitter: "Legs of a test dummy seem to indicate the floating that will be felt when going through the barrel roll of Jurassic World VelociCoaster. https://t.co/1b6pVVEUFv" / Twitter
Question [question] whats the speed limit for barrel rolls? : r/ rollercoasters
World's craziest wooden roller coaster: a 720-degree double barrel roll and an 81-degree drop - The Globe and Mail
ROLLER COASTER INVERSIONS - COASTERFORCE
Universal Orlando Opens Its Most Ambitious Ride Yet