"When World of Warcraft launched, the Dark Portal was a noticeable (but unusable) feature in the Blasted Lands, located southeast of Stormwind in the Eastern Kingdoms. The Portal is located in the southeastern corner of the Blasted Lands and (until Patch 2.0.1) was surrounded by elite demons [...]"
"When World of Warcraft launched, the Dark Portal was a noticeable (but unusable) feature in the Blasted Lands, located southeast of Stormwind in the Eastern Kingdoms. The Portal is located in the southeastern corner of the Blasted Lands and (until Patch 2.0.1) was surrounded by elite demons [...]"
http://wowwiki.wikia.com/wiki/Dark_Portal?oldid=2801382
SDB has this data, the creatures seem to be well-placed: