The T'aresh Mountains was a region on the planet Romulus and was situated in the Brel'kar continent.

Located on the southernmost boundary of the northern region of the continent and was where the Ath'rel'ithar winds from the melting polar ice caps collided. These majestic mountains funnel the winds upwards where they met masses of warmer air that crossed the mountains from the south. This resulted in the formation of frequent thunderstorms in the summer and heavy snows during the winter. The mountains, thus, often changed from being a frozen glacier for half the year after which it turned into a cold swamp.

The T'areshi Romulan people populated these mountains and enjoyed the colder climate. (Last Unicorn RPG module: The Way of D'era: The Romulan Star Empire)