Secret Lair, Slendytubbies Wiki

The Secret Lair (originally known as Secret Layer) is a recurring location within the Slendytubbies series. It is a secret facility situated in the underground of the Main Land, accessible from a hidden passage under a large rock and an implied passage inside the Tubbytronic Superdome. A part of the underground serves as a monitoring place for The Guardian. The lair itself is slightly altered in each instalment but retains essentially the appearance of sewers with the same layout. There is a lon

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