A top hat (sometimes called a top cap) is an element most often used on launched roller coasters. It consists of an ascent at a 90 degree angle immediately followed by a 90-degree descent in the opposite direction from which the train enters. Often, vertical twists precede and follow the top hat element.
The inside top hat (also known as a top hat inversion) is a different type of top hat, that features an inversion. When the train approaches the top of the "hat", it makes a 90 degree lateral twist so that it is on the inside of the element (hence the name). Once the train reaches the top, passengers are briefly suspended upside down before dropping in the opposite direction from which they enter.
Outside top hat
Inside top hat
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