page_title: Roller coaster elements
section_title: Cobra roll
hierarchical_section_title: Roller coaster elements / Inverting elements / Cobra roll
caption_attribution_description: Alpengeist , montagnes russes à Busch Gardens Europe
context_page_description: Roller coaster elements are the individual parts of roller coaster design and operation, such as a track, hill, loop, or turn. Variations in normal track movement that add thrill or excitement to the ride are often called "thrill elements".
context_section_description: The cobra roll is a roller coaster inversion that resembles the shape of a cobra head when flaring its hood. The element consists of two half vertical loops facing the same direction joined together by two half corkscrews that each twist in opposite directions. As the train completes the first half loop, it turns perpendicular into a half corkscrew, completing a first inversion. This is immediately followed by another half corkscrew that twists in the opposite direction into the other half vertical loop, completing a second inversion. The train exits the cobra roll traveling in the opposite direction from which it entered.
  Vekoma's Boomerang was the first model to incorporate a cobra roll, and the first Boomerang installation was Sea Serpent at Morey's Piers in 1984.
caption: A typical cobra roll, as seen on Alpengeist (1997) at Busch Gardens Williamsburg.
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