The Avengers #306

In "There Is a Fire Down Below," the Sub-Mariner joins the Avengers in a desperate fight against the Lava Men, a race whose fiery origins are finally revealed. Trapped within a molten sphere by Jinku, the Lava Men’s witch doctor, the team learns the shocking truth behind their creation—and the deadly reason Jinku seeks their destruction. Written by John Byrne and illustrated by Paul Ryan, with inks by Tom Palmer and colors by Max Scheele and T. Fine, this 1989 issue features a cover by Paul Ryan and Tom Palmer.