Trade for Logbooks

If RNG isn't on Path of Exile 2 Currency your side, buying Logbooks from other players is viable.
Use a third-party Poe 2 trade site or in-game trade boards to find high-tier Logbooks, especially Level 79+ for Olroth attempts.

Using Expedition Logbooks

Once you've secured a Logbook, the process for using it is as follows:

Step 1: Speak to Dannig in Your Hideout

Dannig appears after your first Expedition.
Choose "Show Expeditions Map" when interacting with him.

Step 2: Place the Logbook

Insert the Logbook into the map slot.
This opens up a massive Expedition area with 20 Detonators and high Runic Monster density.
Plan your Detonator placements carefully, prioritizing red poles and overlapping Remnants.

Step 3: Loot and Fight

Carefully detonate in a path that hits the highest concentration of Runic Monsters.
Remember: Only Runic Monsters drop Logbooks.
Use a good loot filter to spot Logbooks immediately.

Fighting Olroth, Origin of the Fall

Olroth is the Expedition pinnacle boss and appears randomly in Level 79+ Logbooks. His icon-a silver skull-will appear on the Expedition map if he is present.

To Fight Olroth:

Use a Level 79+ Logbook.
Unlock Boss Level +1 modifiers in the Atlas to increase the chance of a higher-tier Olroth encounter.

You must defeat him at:

Level 79
Level 80
Level 81
Level 82

Each defeat at these levels grants 2 Expedition Atlas points, for a total of 8 points.

Note: Encountering Olroth in a lower-level Logbook or without proper modifiers will not grant any Atlas points-even if you defeat him.

Tips for Efficient Logbook Farming

Overlap Buffs: Stack Expedition Precursor Tablets in overlapping Towers for multiplicative gains.
Atlas Investment: Max out Expedition passives-especially Detailed Records and Additional Explosives.
Ignore Boss Spawns: Olroth does not drop Logbooks; only regular Runic Monsters do.
Logbook Filtering: Use a custom loot filter to highlight Logbooks with audio/visual cues.

Conclusion

Expedition Logbooks are essential for pushing Expedition endgame content in Path of Exile 2. Whether you're aiming to farm Artifacts, chase Unique drops, or complete your Atlas passives by defeating Olroth, understanding how to farm and use Logbooks efficiently will give you a serious edge.

Make sure to buy POE 2 Orbs focus your detonations wisely, optimize your Atlas Tree, and take advantage of Precursor Tablet stacking-and the riches of the Expedition league will be yours.