Tunnel to Takran quest

I have been in these tunnels forever. I’m on lvl 3 and have been EVERYWHERE. I just cannot figure out where I am supposed to go. Please help

Okay, well you know how the dungeons usually go from left to right to move to the next part?

Well, it’s the same concept only when you hit level three, you take the stairs to the right of the map and it takes you back to level 2 because it’s going back up to the other side! You proceed to go to the left side of the map and take those stairs up and then repeat

So it would look like this

. /
\ /
_____ ____/

So just remember for this tunnel:

Going down, go right
Going up, go left