Galactic History 17 (Matrix Shard) SWTOR Guide
Last update: 11 May 2016
Starting area: Sacred Ruins (Tomb of Tulak Hord - Ruined Atrium)
Target area: Sacred Ruins (Tomb of Tulak Hord - Ruined Atrium)
It also won't be hard to get to the last Datacron. All you need to do is to make your way through the Tomb of Tulak Hord - The Antechamber to the ruined square (Tomb of Tulak Hord - Ruined Atrium).
Once you're there, start going southwest. Then choose left or right path. If any enemies stand in your way, defeat them. Next, search the spot behind the short wall.
There will be the third and the last Datacron there.
Rewards: Red Matrix Shard, Codex entry - Achievements - Datacrons: Galactic History 17 - The Duinuogwuin Contention - 550 XP