Mount Tarhana (also spelled Mount Tar'Hana) was a location on Vulcan and located in the province of Kir. This volcano was almost 483 kilometers east of the capital city of ShirKahr and was visible throughout the city. It was still active and regularly belched out steam as well as fiery lava onto the plains below. Despite this being the case, the eruptions never threatened the safety of ShirKahr. The sight of Mount Tarhana often struck a common chord amongst all Vulcans for it reminded them how fragile their control was over their world's hostile environment. This also served as a potent analogy for how fragile their control over their emotions could be.