In 1970s and 1980s, DC Comics released many of large format comicbooks. Here is a copy of Superman and His Incredible Fortress of Solitude – DC Special Series number 26 from 1981. In this issue, Superman has a vision of the Earth blowing up, mirroring the fate of Krypton. Realizing that the location of the initial explosion came from the area of the Fortress of Solitude, Superman considers it more than a vision and puts forth every effort to prevent the vision from coming true. It’s later revealed that this is part of a scheme by a villain calling himself Dominus who is hiding a big secret.