The Iceberg was a floating chunk of ice off the northeast coast of Club Penguin Online. The only way to access the Iceberg was through the Map or EPF Phone. It could not be accessed by foot from another room. The Iceberg featured the game Aqua Grabber 3000, which allowed penguins to travel underwater and salvage treasure on the seafloor.
It was possible to tip the Iceberg while wearing a hard hat. In order to flip it, you needed to be wearing the color Blue and walking any variant of a Blue Puffle with you. When tipped, the Iceberg completely flipped, revealing a large dance floor, a bin of Iceberg Tipper hats, and a plaque with an inscription that read: "Together, we can build an island, create a community, change the world... and even tip an iceberg. Waddle on."
If 2 Fire Ninjas danced on the Iceberg the sky would turn red, if 3 Fire Ninjas danced then the sky would be red and have red clouds, and if 4 or more Fire Ninjas danced then it would rain fire.
If 2 Water Ninjas danced on the Iceberg the sky would turn blue, if 3 Water Ninjas danced then the sky would turn blue and have blue clouds, and if 4 or more Water Ninjas danced then it would rain.