Ok...I decided to move some stuff and get a look prior to the sweep/inspector getting here next week...here are some photo's for the resident experts to look at and see if anything jumps out at you...if you notice the terracotta flue on the right hand side of the photo...I'm pretty sure thats the flue for the oil furnace that used to be under the house...the roof has three flues coming out of the same stack on the roof and I need to go look but I think one is a fake...one is for the fireplace and one was for the old furnace...all in all it looks ok to me...no liner obviously...