Black bone key
From MUME
> examine key
This is a most strange piece of work. The key seems to be made from a fragment
of bone, but where in the world does a creature have black bones? The skull of
an unknown creature ornaments the key, its eyes two opaque worthless red
stones. On your hand it feels cold, and no matter how long you hold it, the
key never seems to warm up.
> consider key
It is a black bone key.
It weighs half a pound.
Other
Dropped by Nagrorh, this key unlocks the southern exit of Nagrorh's room.
