Exiting the Tomb of Myridian Kings

[Thorgrim]

Can anyone tell me how to exit the Tomb of Myridian Kings? Who has the key, or do I need to do something with the pentagram?

The Entrance to the Tomb of Myridian Kings
This is the mausoleum of the last rulers of Myridius, who had to
be burried so quickly, that only a single gate stands in defense
of their tomb. The mausoleum stretches into the darkness in the east, much farther than your light source reaches. Glancing south you look into a dark crypt, a large shape can be made out within the shadows. The dust down here makes your throat dry, the musty
smell reminds you of death. There appears to have been a demonic
red pentagram carved into the ground recently.
Obvious exits:
east - Too dark to tell.
south - Too dark to tell.
west - The door is closed

[Lelarion]

If you're locked in, either feigndeath or die.