Vent Horizon

or a reference to the event horizon of a black hole. in which the proximity is so close to the center that no radio waves or waves of light can escape, making it impossible to convey information about it

To complete this quest, turn your camera angle 90 degrees so that you are looking to the right (toward the mountains) and zoom out. You will then clearly see the vents as you fly past them and easily be able to target them.

This could also be a reference to the movie Event Horizon. Although the quest description doesn't really indicate that at all, the first quest in this pre-Cataclysm event is likely a reference to a movie title as well.