Occurence: The Incredible Hulk #102

The Hulk is in a heavy battle with the Red King on the planet Sakaar and when the Red King senses he is going to lose, he triggers a mechanism which causes the planet's plates to start to rip apart. The Hulk jumps down into the hole with the lava where the main split is and by sheer strength alone, pulls the plates back together and prevents the planet from ripping apart.

Hulk's Strength Feats

Incredible Feats of the Hulk Main Page