The mirror you found is cracked and at risk of being destroyed.
This mirror is cracked and about to break. It appears that the local Orcs and goblins have been using it for target practice. As you go to touch it, you hear the sounds of approaching Orcs.
Goblins and Orcs are attacking the mirror, attempting to destroy it.
Kúli is at the Orc-Watch.
The dwarf Kúli will be interested in knowing the mirror here is still safe.