Beren's Peril (quest)

In Baren's Peril, you must travel to a cave in southern Silverpine Forest and kill undead creatures there.

Objectives
Locate Beren's Peril, then kill 6 Ravenclaw Drudgers and 6 Ravenclaw Guardians, then return to Shadow Priest Allister at the Sepulcher.
 * Ravenclaw Drudger x6
 * Ravenclaw Guardian x6

Description
I have received reports that a group of undead are holing up to prepare for an attack against us. Armed with this information, we can turn the tables and attack them first, nipping their little plan in the bud.

Unfortunately, my information is spotty, at best. They are reported to be hiding in a location known as Beren's Peril. The exact location is unknown, but it appears to be a cave in the hills, near a pocket of Dalaran wizards.

I trust your resourcefulness. Find them, and put them down.

Reward
You will be rewarded with the following:

Progress
Have you located their base yet, ? Time is of the essence!

Completion
If our scouts and agents continue to procure valuable information such as this, we shall have the Lich King's Scourge removed from our lands in no time.