It is sometimes nicknamed "the cages" or "the eggs". Its shape is similar to that of a Ferris wheel, but with seats that are enclosed and rock and roll as the ride rotates. If the rocking builds sufficient momentum, the seats will flip upside-down and roll end-over-end. There is usually a manual hand wheel inside that the riders can use to lock the seat and prevent it from rocking. This can be used to make the ride less scary by ensuring that the seats do not rock too much; or to make it more intense by locking the seats at crucial points in the ride's revolution, causing the seats to flip upside down and spin erratically. The minimum rider height requirement is 36 inches.
In the UK, many of these fairground rides are still travelling, and most were imported from the US in the 1980s. Some of these traveling examples have had their standard 'egg' shaped cages replaced with front-facing open cars. These rides are known as "Sky Dancer", "Hi Impact", "The Cages", or sometimes colloquially as an "Egg Roller".
This ride can be found in various amusement parks throughout North America including:
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