Abyss is a steel roller coaster located at the Adventure World amusement park in Perth, Western Australia. The $12-million attraction was announced in April 2013, and construction began the following month. It opened to the general public six months later on 1 November 2013. The Abyss is a Euro-Fighter, a roller coaster model from Gerstlauer that features a "beyond-vertical" first drop which exceeds 90 degrees. In addition to several inversions, the Abyss reaches a top speed of 85 kilometres per hour (53 mph) along the two-minute, 630-metre-long (2,070 ft) ride.