It is widely rumored that it is possible to tip the Iceberg when 100 penguins are on one side of it. Some players say all 100 have to be drilling or dancing. Other penguins even say that each individual gets a certain number of coins, but this number has been said to be anywhere from 300 coins to 1,000,000. The Iceberg tip has never been done, but it may happen in the future as a community event. But as for now, it is impossible.
A real surge of tipping appeared after a comic in The Penguin Times showed two bored penguins who tried to tip the Ice Berg and succeeded. In another edition of the same newspaper, Aunt Arctic answered whether the Ice Berg had ever been tipped. She said that she had never seen the feat, and that there probably will be no reward for it, proclaiming, "Tipping the Iceberg is a reward enough!".Also, in issue 151 of the Penguin Times, she replied to a penguin that that she didn't know, but if they saw people trying to tip it to try and see for themselves.
This article was there to match with the Secret AgentMission #2. In this mission, some penguins were trapped in a piece of ice and the secret agent had to save them, by throwing out a life saver.
In the Secret Agent Mission 6, Herbert P. Bear explains that the iceberg he was traveling on tipped at one point. When the player asks how he managed to tip it, he replies, "I don't know! Icebergs aren't supposed to tip!", indicating that the Iceberg can not be tipped.
A running gag in the PSAMissions has Klutzy and Herbert constantly bickering about the Iceberg and its tipping. Klutzy even mentions penguins tipping the Iceberg in Mission 9.
During Music Jam The Club Penguin Band played at the iceberg. Many penguins were confused why didn't the Iceberg tip, the band were on breaks which proves that it doesn't tip. It may happen in the future as many penguins are questioning Club Penguin.
On December 28, 2007, there were sightings of blocks of ice when fans of Rockhopper looked through the telescope at the Beacon. A small block of ice collided with the Migrator, and the ship sank. Rockhopper and Yarr escaped unharmed, and rowed to the shore. After a brief stay, Rockhopper made the decision to row back to Rockhopper Island in a minuscule rowboat. The Migrator was salvaged and eventually reinstalled at its normal docking point on the beach.
Trivia
A real world iceberg that bears a striking resemblance to Club Penguin's version. This particular iceberg was cited off the coast of Antarctica.
On New Year's Day 2007, players found that they could walk in the sky and in the water around the Iceberg. This was fixed in the middle of the day.
There were fireworks here and at the mountain On New Years Day 2008.
Most people don't see it as a "secret" room because almost everybody who plays Club Penguin knows about it.
If you challenge Sensei on Card-Jitsu and he uses a level 12 water card, he'll start rocking the iceberg. (For the record, you can unlock the card.)
Many penguins still try to tip the iceberg even though it's impossible.
Club Penguin has made a puzzle about tipping the Iceberg.
During Halloween solar eclipse of 2006 the Aurora Borealis, (Commonly known as the Southern Lights) were visible.
During the Christmas Party 2008, the Iceberg had a small tree in the middle of it. The tree would grow bigger each time players clicked on it.
During the Dance-A-Thon party, Cadence would sometimes say "Dance like the iceberg is tipping!!!" when she was waddling around the Night Club on some servers.
