Research Base - Entering the Weather Station

When you're ready, head up the metal stairs toward the large building with the dome.

Take a little detour down the stairs to the large platform (helipad?) on the right...

...to find a container of cloth behind some boxes.

At the top of the stairs there's a document (1/4), The Ordeal from the Operational Report series, sitting on a crate just to the left of the door, which doesn't open.

There's also a relic (2/3), a Reliquary Pendant from the Watcher in the Woods set, behind this building.

Return to the front of the building, go up one more short flight of stairs, and then climb the yellow ladder to the catwalk above.

At the end of this walkway is another relic (3/3), an Engraved Casing, also from the Watcher in the Woods set. Examine it and then enter the building.

In the main room on the lower level, there's a another container of cloth...

...and a document (2/4) sitting on a table near the window. It is The Strength of Faith from Ana's Research Notes. If you're following the story, do not skip this one.

Enter the small room in the north corner to find another document (3/4), Danger from Jonah's Radio Calls to Lara.

Climb the ladder in the opposite corner to reach the room under the dome and trigger a short cutscene: Lara retrieves the Atlas then sees Konstantin interrogating Jonah on a video monitor.