Why were the wargs meeting in that part of the forest?

The wargs were meeting in that part of the forest to discuss their plans and strategies, likely in connection with their alliance with the goblins and to coordinate their attacks on nearby settlements. This secluded area provided them with a safe place to gather away from prying eyes, allowing for a more secretive and strategic assembly. Additionally, the dense forest offered cover and a sense of territory that they could claim as their own.