The Gurghiu Mountains (Romanian: Munții Gurghiu, Hungarian: Görgény) are a range in the Căliman-Harghita Mountains of the Eastern Carpathians, Romania, in the Transylvania region. They cover an area of 581.76 km2 (224.62 sq mi). The mountains are relatively low, but well-wooded and naturally beautiful. They are known for an abundance of wildlife, including deer, wild boar, wolves and bears. The mountains were formed during a period of volcanic activity between 9.4 and 5.4 million years ago, starting in the north and moving southwards.