The Secret Oasis is an isolated area of vegetation in Egypt, surrounding a small puddle of water. Its water can only be sipped by Sphinx Uniqua.
The oasis consists of several trees with brown bark and green leaves. The puddle the trees surround is full of blue-colored water.
The Secret Oasis has appeared in one episode of The Backyardigans: "The Key to the Nile" from season one.