What kind is it? But, I agree w/Justin, it does appear to be underexposed. According to my IE's Exif reader, you shot it @-1EV. With nothing bright in the scene, what was your logic behind that decision? Trust the meter, Bob! :wink: Would like to see that shot again with the proper exposure!
In cases like this, a little fill flash can be used to illuminate the foreground subjects against a strong back light. It takes practice to get just the right amount, but it can definitely make a big difference.