Space Mountain is one of the most well-known attractions in the world, and is almost certainly the most famous in-the-dark roller coaster ever built. However, fans of the attraction will not be able to ride the Disneyland California version of the coaster in the near future as Space Mountain has been shut down over safety concerns.

On Friday, April 12, Disneyland was issued safety citations by the California Division of Occupational Safety and Health. The description of the citations states that a contractor was injured while performing maintenance on the exterior of Space Mountain. While investigating the incident, the department found that Disneyland had not corrected “known fall hazards” on the outside of the Space Mountain building after a Fall Protection Assessment Report in 2006.

Though the safety concerns for Space Mountain do not relate to the ride itself or did not endager theme park attendees, other rides at Disneyland have also been shut down. According to a report from the Los Angeles Times, the Matterhorn Bobsleds and Soarin’ Over California were both shut down over the weekend, though the Matterhorn Bobsleds reopened on Sunday. A spokesperson for Disneyland told the Times that the closures were voluntary and that the park is “reviewing certain protocols.” An estimate for when Soarin’ and Space Mountain might re-open has not been announced.