The Underground Tunnels

The Underground Tunnels on Endelaan are secret tunnels that run beneath the surface. The main entrance to the tunnels is a secret door from the Main Hall of the Forbidden Temple.

"there is a vast network of tunnels that run through the earth of the planet. Formerly used by Sith to carry out a variety of experiments and rituals, it's been a closely guarded secret in the centuries that followed the collapse of any official government on Endelaan. Protected by a very small few."

- Diomedes Antares in So Familiar