Archivist Maps are not required for 100% completion, but they can help you find documents and relics. This guide, along with the annotated level maps linked below, should help find any archivist maps you missed. If you are playing this level for the first time, you may want to follow the main walkthrough instead.
ARCHIVIST MAP 1
Found just north of the Train Yard Base Camp. Climb into the guard tower near the gate with the star above it, but instead of using the zip line, drop down on the other side. Go around to the left to find the map spread out on a crate. To get back out, climb over the fence here. See the walkthrough and level map for details. (Click screenshot to enlarge.)
ARCHIVIST MAP 2
This map is in the Ancient Cistern Challenge Tomb. See the walkthrough and level map for details. If you missed it, fast travel to the Cistern Cavern Base Camp. Swim across to the northwest corner of the large pool where you found the codex, and you'll find the map in an alcove just above water level. (Click screenshot to enlarge.)
ARCHIVIST MAP 3
This map is inside the cave east of the abandoned sawmill northeast of the Logging Camp Base Camp. Look for the tall rock formation with the radio tower on top, and you'll find the cave entrance at the base of it. There may be wolves in or around the cave. The map is inside. See the walkthrough and level map for details. (Click screenshot to enlarge.)
ARCHIVIST MAP 4
This map is in the building on the east side of the Gulag. To get back there after completing this area, fast travel to the Gulag Base Camp. Go up the hill to the south, wade through the water-filled trench, and climb the ladder into the room above. Then follow the path through the shacks to the room with the pool and electrical socket. Wade through the pool and enter the room on the left to find the map. (Click screenshot to enlarge.)
ARCHIVIST MAP 5
This map is sitting at the end of a dead-end path just to the left of the wolves' den northwest of the sawmill. That cave is marked C6 on the level map. It's the one you visit in the course of the Dangerous Territory and Gulag Recon missions. (Click screenshot to enlarge.)
ARCHIVIST MAP 6
This map is in the Voice of God Challenge Tomb. It is just inside the tomb entrance in the dark room on the left, along with Document #17. If you missed it the first time, fast travel to the Frozen Gorge Base Camp and then retrace the original route to the tomb. See the walkthrough and map if necessary. (Click screenshot to enlarge.)
ARCHIVIST MAP 7
This map is in the passage leading to the Red Mine Challenge Tomb. If you missed it the first time through, it's probably quicker to return to the Copper Mill Yard Base Camp and then climb up through the buildings to the tomb entrance. The map is on the left at the first fork in the tunnel. See the waltkhrough for details. (Click screenshot to enlarge.)
ARCHIVIST MAP 8
This in the the area in the Copper Mill where you first learn to craft molotov cocktails. Climb onto the ledge above strongbox #8, just before the Red Mine Challenge Tomb entrance, and jump to grab the yellow ladder. Climb up to find the map. (Click screenshot to enlarge.)
ARCHIVIST MAP 9
The last map is near the Copper Mill Bridge Base Camp, which you will not be able to access until after completing the Flooded Archives level later in the game. When you get here, look for the map on the northeast side of the building near the campfire. (Click screenshot to enlarge.)
†UPDATE HISTORY: 4/24/16 - Page first posted online.
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