Masaba

Masaba is a class M planet located on the opposite side of the space of the Romulan Star Empire away from the Federation.

In the 23rd century, Masaba was home to a primitive humanoid civilization, the Masabans. The planet had once been much more technologically advanced, with ruins of great computer-controlled installations hidden in Masaba's wilderness.

In the 2260s, the Starfleet starship USS Enterprise was stranded near Masaba, and a landing party visited this world searching for dilithium. After finding their way through contact with a Masaban medicine man, the crew avoid shooting plants and swamp beasts, obtain a repellent against Masaban blood worms, and enter a ruin using an artifact known as the Eye of Kakos as a key. After overcoming a puzzle of alien symbols, the crew activate a powerful computer that allows them access to a store of raw dilithium.