You will need to obtain a Red Detonite Actuator item before you can get this datacron, hidden deep in a Killik cave.
Get Red Detonite Actuator
To blast open a cave for this datacron you will need to buy a Red Detonite Actuator item from a vendor named Lain-Ricie in the Juran mountains. This is the same vendor that sells the MGGS item – if you like collecting datacrons and other achievements you should buy one of each of the three items this vendor sells.
The closest Republic quick travel point is the House Alde quick travel point and the closest taxi is the House Alde Library Thranta speeder point, on the right side of the map, and then run quite a ways south along the mountain paths to the vendor.
The closest Imperial quick travel point is the Outpost Talarn quick travel point and the closest taxi is the Outpost Talarn Thranta speeder point, which are both very close, and you can cheat a bit by jumping over some mountains to the west and you’ll practically be there.
Big Map of Alderaan for Red Detonite Actuator, with Republic names:
Exact Location of Red Detonite Actuator on in the Juran Mountains, look for the vendor symbol on the map:
Quick Travel / Taxi / Heroic Shuttle
Republic side, the [HEROIC 2+] Into the Killik Warren is much closer than quick travel or taxi.
Get to the Killik Caves
Find the Blast Pack
requires the Red Detonite Actuator
If someone has already blown up the cave recently, you don’t need to blow it up and can walk right into the new tunnel.