Al'Hmat

al'Hmat was the name of a planet in the Korvad system in the Alpha or Beta Quadrant, the homeworld of the al'Hmatti race. Noted for its sub-freezing temperatures and almost completely ice-covered surface, al'Hmat was also rich in topaline, a valuable mineral resource. This led to an invasion by the Klingon Empire in the mid 22nd century, who renamed the planet taD -- tlhIngan Hol for "frozen".