The western door opens up into a small chamber that reeks heavily of dog... well that or wolf most likely, considering the ones you just have encountered.
The nearby north-western one has a short, thirty feet or less long corridor that goes into a hall of some sort. Berak can notice a table in it, but doesn't seem to spot anyone in it, at least in the part he can see looking through the door - there is certainly more of it that can be seen from the doorway.
The final, north-eastern door leads into a long corridor, longer than he can see. There are doors through it, mostly on eastern side.