Ayai'leh-hirh

The Ayai'leh-hirh range is the largest mountain range on the planet Trill, and it is one of the largest on any inhabited planet, for that matter. In English, the name of the range translates to Five Thousand Valleys.

Mountains in the range include Arken, Ilrienh, Noraikghe, Oraidhe, and Sethe. (novel: Star Trek: The Next Generation: Intellivore)