Rise of the Runelords

You pushed open the door at the end of the hall and looked into a more natural shaped chamber.  However, the walls of this chamber, while not 'finished' per se, were smoothed over to an even greater degree than those of the rest of the library level.  You started in when your light exposed three hounds not of this world.  They immediately charged but stopped short and glared at the front of the party.  Their gaze seemed to tear at the very fabric of matter itself, leaving bloodless rents in flesh.  You closed on them and quickly destroyed them, as they were no match for melee combat.  But not until after they did some damage with their gazes.

The only thing in the room was another exit.  There was no treasure, bedding or even signs that anything lived here.  The exit was an ornate set of bronze doors that closed so neatly that you could barely make out the edges.  The main feature of the door was a silvery metal inlay of a seven pointed star.  Other small  bas-releif detail covered the rest.  The detail is mostly depictions of giants.

You psyched yourselves up and readied for your entrance.

.