The Flintstones Show opened, replacing the Star Trek Adventure. In 1991, E.T. Adventure opened as the park's first "dark ride," an industry term for an attraction that uses ride vehicles to take passengers through an indoor show building. Around the same time, sister park Universal Studios Florida opened, which had its own, similar E.T. attraction. The Florida version was more of a conventional theme park and paved the way for the Hollywood park's evolution. In 1993, opened, replacing Battle of Galactica. In 1996, opened. In 1997, two shows were replaced: The Land Before Time show replaced Rocky and Bullwinkle Live; and Totally Nickelodeon replaced the Flintstones Show. Just one year after it opened, the Land Before Time show was replaced with Coke Soak. In 1999, and a Chicken Run Walkthrough opened on the upper lot. Additionally, Beetlejuice's Rock and Roll Graveyard Revue was closed.