Avengers (1963 Series) #282

"Captives" Part 2 of 5. The Lord of Olympus has banished the Avengers to Hades! And now the Black Knight, Captain America, Captain Marvel, Doctor Druid, She-Hulk, and Thor are prisoners of Pluto! The situation looks bleak inside the castle dungeon especially with the thunder god suffering from crippling injuries. However in the Atlantic Ocean (and under orders from Zeus), Neptune grabs the Sub-Mariner and throws him in Hades too! But that could actually be a stroke of good fortune for Earth's Mightiest Heroes! If Prince Namor can navigate the River Styx, slip past watchful Cerberus, and bust into Fortress Tartarus; the Avengers might just have an opportunity to escape! Cameo appearances by Marrina and Prometheus.