Challengers of the Unknown (1958 Series) #82

"The Lurker Below”. Prof is dying of an all-consuming fungus infection; Rocky, June, Ace, and Red rush him to their jet; Gaylord Clayburne, playboy-Challenger-wannabe, learned Prof was sick and found a specialist to heal him; Ignoring Clayburne, the Challengers zoom off to Perdition, Pennsylvania, a farm town; As soon as they land, the Challengers are mobbed by farmers with pitchforks; Doctor Monroe calls off the farmers; Dr. Monroe relates the town's history to the Challengers; Seventy years ago, a man summoned a demon to the town; Enthralled, the locals sacrificed strangers to the "god" until Swamp Thing came to town and collapsed its cave, burying the monster "forever"; Behind the scenes, we see the fungus lived on and still infects many locals.