Built by the Institute’s very own student, through the borrowed knowledge of Henry McCoy and Katherine Pryde, David Alleyne (Prodigy) constructed a "Danger Cave" just before his mutant abilities were de-powered. The Danger Cave allows students to relive former field missions of the X-Men so that they may train efficiently due to the recent loss of the Danger Room. Similar to the Danger Room, the Danger Cave is a three-dimensional light projecting self-adapting training simulator but can only recreate logged events. But unlike the Danger Room, the Danger Cave generates the actual apparel of the field mission’s participants on those presently engaging the simulation—clothing them as those from the actual scenario.