Legion of Super-Heroes 264 (Jun 1980) NM- (9.2)

Dagon's Cavern of Doom!

Script: Gerry Conway

Pencils: Jim Janes

Inks: Dave Hunt (credited)

Colors: Gene D'Angelo

Letters: Milt Snapinn

Characters: Legion of Super-Heroes [Wildfire; Dawnstar; Light Lass; Tyroc; Saturn Girl; Lightning Lad; Shadow Lass]; Dagon the Avenger [Wezil Yondor]; Arn Digby; Tarnia Tolarn; Crav Nah; Mytra Nah; Marte Ida Allon; Wynn Allon; Ji Daggle; Derek Morgna

Synopsis: The Legionnaires deduce the identity of Dagon and discover his hideout -- buried directly underneath their new headquarters. Later, Shadow Lass and Dawnstar follow Tyroc to his island home of Marzal, which vanishes into another dimension, trapping them all.