Strange "thumping" in suspension on 2005 Nissan Murano

We have a 2005 Murano AWD. There is a thumping sound coming from the front suspension that sounds almost like a bass drum. Brakes, rotors and tires are all in good shape. I can not find anything that is loose and don't have any idea where the problem could be to try and fix it. Any suggestions?

Asked by for the 2005 Nissan Murano