Make your way to the northeast tower. The entrance portal is up top (restricted to levels 20+).
From the entrance, take the passage around to the southeast until you reach some stairs.
Take the stairs down to the lower level and you'll see two passages on the west wall.
Take the one on your right, then hug the right wall until you reach a large open room.
Exit the room on the the west side and go through the doors. Continue straight ahead through two more doors and take the ramp up. # You should now be at a locked door. A pressure plate on the floor to the north opens it.
Inside is an altar guarded by Tumeroks. From this room take the passage to the north and go through two doors.
At the T junction take the right passage heading south and down a ramp. At the bottom of the ramp make a left into a small room.
Dinsmal the Beggar tells you, "It's said that tumeroks are crawling all over the Direlands. There's even supposed to be a big, hidden, underground fortress somewhere, where the biggest and most powerful tumeroks live."
Dinsmal the Beggar tells you, "Tumeroks have some basic building skills and have also taken over many Empyrean ruins in the Direlands, so you'll see numerous walled forts over there."
Dinsmal the Beggar tells you, "It's said that some of them are locked, so you might need to find the right key, or know someone who can pick the locks!"
Orcud the Beggar tells you, "Near the main tumerok camp, outside of town, is a portal into the Direlands. Supposedly there's a portal that comes back from the Direlands, too, but it's guarded by tumeroks on the other side."