This article or section contains lore taken from Warcraft III: Reign of Chaos, Warcraft III: The Frozen Throne, the manuals, and official bonus maps.

The Beast Den is a cave near the coast of Durotar that had been infested by Quilboar, they attacked the orcs that went to a costal observatory, however the entire tribe of quillboars was killed by Rexxar, Misha, Rokhan and Chen Stormstout.

Source

Quest: Slay the Quillboars, Warcraft III: The Frozen Throne. Blizzard Entertainment. Beast Den, Durotar. Gar'thok.