Avengers #190 1979

Avengers #190, published by Marvel in December 1979, begins the "Heart of Stone" storyline. The team faces a Senate hearing initiated by Henry Peter Gyrich, who aims to revoke their security clearance. Simultaneously, a mysterious stone creature emerges from Jamaica Bay, forcing the Avengers to interrupt the proceedings. Daredevil guest-stars, joining the battle against the menace, revealed to be the Grey Gargoyle. The issue is notable for its dramatic cliffhanger, as Iron Man and Daredevil are both turned to stone.