How did this scene look to your eye at the time? Could you see a lot of detail in the darkness or was it very dark compared to the bright light from outside? I would steer clear from HDR and instead try to reprocude the scene as you could see it. There is a little too much black areas though, try a square crop to cut off a lot of the black areas. Still keep some there though, they add to the mood.
PS. The light shining though the dust is great! A crop as I suggest above will make this more prominent.