Tyrann Mountains

The Tyrann Mountains are a massive mountain range located on the eastern border of Ustio. Tyrann is a prime vacationing spot, but it has also been the spot of many border disputes. Valais Air Base, where the Galm Team was stationed during the Belkan War, is located here.

History
In ancient times, the Tyrann Mountains were used as a trade route between neighboring lands. As humanity expanded, the mountain range became a major crossroads for pilgrims settling the nearby areas.

More recently, the Tyrann Mountains, known for their "elegance", has been a popular spot for tourist vacations, particularly with the development of winter resorts. Many winter sports are also held here; the high peaks would make Tyrann a prime destination for skiing.

For a long time, there would be border disputes along the mountain range for its resources (not unlike the more recent border disputes centered around Area B7R, Belka). This resulted in a famous folklore legend that states "crimson blood" flows beneath the layer of snow from all of the historical battles in the area. Valais Air Base was built into the mountain range at some point, and their main purpose during peacetime was border control, implying Valais may have been involved in such battles in the mid- to late-20th century.

In December of 1991, following Belka's Federal Law Review, the Republic of Ustio was independently founded in Belka's former southeastern territory, including the Tyrann Mountains.

On April 2, 1995, during the Belkan War, the Belkan Air Force attempted to bomb and destroy Valais Air Base. Mercenaries of the Ustio Air Force 6th Air Division shot down all of the Belkan bombers and their escorts over the Tyrann Mountains, preventing any damage to the base. On December 25 of that year, A World With No Boundaries successfully utilized their XB-0 to bomb Valais, followed by a retreat to the Waldreich Mountains.

Description
The Tyrann Mountains average around a height of 3,000 meters (approximately 9,800 feet or 1.86 miles) above sea level. The highest peak, "Monte Rosa", exceeds 4,000 meters (~13,000 feet, ~2.48 miles). The snow layer is permanent due to the elevation, and the area is surrounded by thick glaciers that have cut deep valleys into the mountainside. These valleys can be habitable, such as the one housing Valais Air Base. However, the valleys' jagged edges and thin space make it difficult for pilots to fly within, requiring exceptional skill to land safely.

Trivia

 * Monte Rosa (alternatively Mt. Rose), the highest peak of the Tyrann Mountains, is a reference to the real, the second-highest peak of the whose elevation also surpasses 4,000 meters.
 * Interestingly, the Alps' highest peak is, whose name is later used for Operation Point Blanc in Ace Combat Infinity, though these have little correlation since the operation name references the French term for.