1. Find the first tower
After entering endgame, locate the Precursor Tower that appears near the Ziggurat Refuge on the Atlas.
Endgame quest

Use a Waystone to enter the first Precursor Tower, defeat its map boss, and activate the Precursor Beacon at the end. Return to Doryani after the beacon is active. The quest ends after that conversation and awards an item level 70 Irradiated Tablet.
The quest is completed inside the tower first, then finished by speaking to Doryani.
After entering endgame, locate the Precursor Tower that appears near the Ziggurat Refuge on the Atlas.
Use a suitable Waystone to travel to the Precursor Tower map.
Reach the end of the tower and kill its map boss. The beacon cannot complete the tower while the boss remains alive.
Interact with the Precursor Beacon after the boss fight. This completes the tower and reveals the surrounding Atlas area.
Return to Doryani after activating the beacon. The quest now ends at this conversation.
The quest reward and the tower's Atlas effects are separate benefits.
Doryani awards an item level 70 Irradiated Tablet.
Completing a tower reveals a large part of the surrounding Atlas and grants a random Tablet.
Completing the first tower causes the Precursor Fortress to appear north of the Atlas starting area.
Precursor Towers along the Fortress walls also grant Atlas passive skill points when completed.
Tablets are used from the Map Device. Towers are no longer required to apply ordinary Tablets.
Place Tablets directly in the Map Device with a Waystone. Do not look for the old tower socketing interface.
Kill the map boss and activate the Precursor Beacon.
The quest does not end at the beacon. Speak to Doryani afterward.
Continue with the exact quest, item, area, or tool.
The item level 70 quest reward.
DoryaniSpeak to Doryani after activating the Precursor Beacon.
Legacy of the PrecursorsContinue into the Precursor Fortress and its boss route.
Atlas passive point guideTrack Precursor Tower and Fortress passive point rewards.
Atlas passive treeReview the current Atlas passives and point sources.