The Hidden Lake is an underground room in Club Penguin Island. It is a subterranean lake located beneath the Forest. To the west is a cave leading to the Cave Mine, and towards the eastern door is the Underwater room, which requires the Moss Key Pin to be unlocked.
History[]
The Cave Mine was first released on February 25, 2023. It was accidentally made accessible from the Cave Mine at the start of the Beta Party for 30 minutes before being removed. The Cave Mine was officially opened on June 20, 2025 during the Adventure Party 2025, and made its first regular appearance the week after.
Pins[]
| Image | Pin |
|---|---|
| None | |
Parties[]
- During the Adventure Party 2025, the Hidden Lake was decorated with pink, purple, and blue shells, moss, and streamers, as well as treasure. The Underwater room was open to everyone during the party, and players could buy items from the Hidden Lake Catalog.
- During the 3rd Anniversary Party, the Hidden Lake was decorated the same way as it was during the Adventure Party 2025.
Gallery[]
Graphical Designs[]
February 25, 2023 - February 25, 2023
June 27, 2025 - Present
June 27, 2025 - Present
