Avengers Annual (1967) #20

Hercules and Sersi’s afternoon stroll down Broadway is interrupted by an explosion from down below! Suddenly a large hole has opened up in the pavement and hordes of Lava Men, Tyrannoids, and Moloids are pouring out! Where are these strange creatures running to? Or perhaps the better question…what are they running from?! PLUS appearances from Thor, Iron Man, Captain America, Black Widow and MORE!