Initial Contact is one of the Documents in Baba Yaga: The Temple of the Witch (additional content for Rise of the Tomb Raider). Part of the Bravo's End set, these are recordings from a Trinity agent as his complete squad meets its demise at the hands of Baba Yaga...
A dispatch from Bravo Team, before they entered the Vale
Initial contact was made with the elderly native male at 0700. At first we believed he was participating in an assault on the facility, but he proceeded away, and through an unmapped canyon.
We received authorization to pursue at a distance, and already we've encountered ruins and other promising signs. We're trying to keep calm out here, but this looks like a big find. That discovery bonus is as good as ours.