Employees at Colorado's Red Rocks Amphitheater reported witnessing a large disc-shaped UFO hovering above the venue before disappearing. Descriptions of the UFO included being several hundred feet long, with three levels of windows and lights, and it slowly vanished as if using a cloaking device. The sighting was reported by multiple employees, who were unable to capture visual evidence as the craft quickly disappeared. The incident has sparked online discussions and skepticism due to the lack of visual proof, leaving the authenticity of the encounter in question.