Not to be confused with the Cove, a similar sounding room.
The Underground Pool, previously known as the Cave, is a room in Club Penguin. It was opened to everyone on May 29th 2006.
- It was first opened to members-only on May 26th 2006.
- The Cave has a swimming pool in it, which was added during the Sports Party.
- The Cave was flooded in July 2007 after a crab tapped on the window, causing it to leak, which led to the Water Party 2007.
- The sound effects for this room are from Operation: Puffle.
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