Soviet Union

The Soviet Union is a former country that its ruins appear in Rise of the Tomb Raider.

History
Over the centuries, the Remnants fended off any invaders that came to their lands. One such invasion was by the Soviets, who arrived to mine the mountain. With advanced weaponry, the Soviets fended off the Remnants, capturing and enslaving many of them. The Soviets were successfully able to settle in the area for long enough to establish a working mine as well as research stations and a Gulag.

During this period, a group of Soviets went into a nearby Vale to further their study of the area. However the squad sent into the area were massacred, with only a single man returning warning them, that the mythical Witch, Baba Yaga was responsible for the massacre. Any Soviets or Remnants who ventured in, never returned.

After several years, the Remnants managed to make allies of the prisoners the Soviets had imprisoned in the gulag and staged an uprising, killing the invaders and extending an invitation to the prisoners to join them.