Square has announced a third DLC pack for Rise of the Tomb Raider:

REDWOOD CITY, CA (March 22, 2016) – Square Enix ^® and Crystal Dynamics ^® will release the thirdRise of The Tomb Raider^® content pack titled Cold Darkness Awakened  on March 29 for PC on Steam^® and The Windows Store for $9.99. Players who have purchased the Season Pass or have downloaded the additional content separately will be able to continue the journey as Lara Croft® takes on nightmarish predators in an abandoned Cold War base. Cold Darkness Awakened will also be available that same day for Xbox One and Xbox 360.

Cold Darkness Awakened takes Lara to a decommissioned Cold War research base, which holds a dark past that has been unleashed into the Siberian wilderness. As a deadly affliction spreads, Trinity soldiers transform into bloodthirsty killers who thrive on carnage. Lara must rely on her wits, physical agility, and crafting abilities to overcome this new enemy and shut down the decommissioned base.

Rise of the Tomb Raider Season Pass includes Cold Darkness Awakened, along with the previously released content packs, Endurance Mode and Baba Yaga: The Temple of the Witch, as well as additional outfits and weapons. It is available via Steam and Xbox Live for $29.99.