Quesh Endurance Datacron Location
This Datacron unlocks the codex entry - Galactic History 59: Aleema's Fate
This datacron holds unheard of power and knowledge collected by an ancient race. You access its power and discover writings which are clearly only one small piece of a massive galactic history:
Treachery is the way of the Sith. Ulic Qel-Droma's capture on Coruscant had been engineered partly by his ally, the Sith sorceress Aleema Keto: she had ordered Mandalore to withdraw their forces at a critical moment. However, after Mandalore helped to rescue Ulic from Coruscant, he secretly told Ulic everything. Aleema's fate was sealed.
Feigning ignorance, Ulic continued with the Sith Brotherhood's plans. Using Naga Sadow's ancient battleship, the Corsair, they planned to lure the Republic fleet into the Cron Cluster and use the Corsair to destroy its suns, annihilating the fleet.
Aleema took the Corsair into the Cron Cluster and activated the superweapon, but Ulic had deliberately not warned her of the consequences. The blast annihilated the entire Cron Cluster in a supernova, sending a shockwave toward the Jedi world of Ossus. The Corsair itself was consumed, taking Aleema with it.
How To Retrieve This Datacron
This Datacron is located inside a cave in central Quesh (Screenshots 1 & 2) and could be easy or hard to get depending on how you look at it. What this Datacron requires is you to go into the cave, deactivate the ventilation system which causes the room to fill with gas. Once the room fills with gas you need to hit the east and west switches which are on two pillars in the room. After that the force field to the south which the Datacron is behind will be lifted. It's pretty easy, you just have to be semi-fast doing it or you die.
When you turn off the ventilation to the room be sure to be standing where I am in (Screenshot 3) that way you are locked inside the room and able to hit the east and west switches.
Location of the tunnel where this Datacron is.
Location on the map of where you can find this tunnel.
The switch you need to hit to lock yourself in the room with the gas.
A picture of the Endurance Datacron up close.
A picture on the map of where the Endurance Datacron is located on the map.