Trill (planet)

Trill is the homeworld of the two species jointly known as the Trill. The planet has a blue-green sky, and the rocks are bluish in tint.

The largest mountain range on Trill is known as Ayai'leh-hirh. The planet is also home to a number of lesser life-forms, including Trill feather-apes. (novel: Star Trek: The Next Generation: Intellivore)