Through the Dark Portal begins the Through the Dark Portal quest chain.
Travel through the Dark Portal and find Commander Duron. He awaits your arrival on the other side - in the Outland.
For 20 years the Dark Portal has remained a silent monument - a eulogy to a time long since forgotten.
<Relthorn looks around.>
I never thought to see this day, yet here we stand, looking into the abyss.
On the other side of this gate we are locked in a savage war - a war that we cannot win without support. You must go through the Dark Portal and help our troops, <class>.
Report to Commander Duron at once. He awaits you in Outland...
Welcome to Outland, <name> -- welcome to the nightmare! Though the initial Expeditionary Force made it through unscathed, the Legion is attempting to retake the Dark Portal and prevent any of our reinforcements from coming though.
As much as I'd like your aid here, our troops and the Horde soldiers are able to fend off the Legion platoons that are attempting to take control of this platform.
We need you where your talents can best be utilized.
As with most other chain quests where the first step can be skipped, you cannot log this quest if you've already completed Arrival in Outland.