Holy Floor Seams

Several weeks ago we took up the majority of the carpet in the dining room and declared it in good shape. This weekend we took up the rest of the carpet and found a whole lot of unexpected floor seams and hacked up, pieced together wood. We're not exactly sure what the matching chunks out of either side of the bay window used to be. But the seam is uneven enough that we're going to have to have another go around with the industrial sander, which we were all hoping to avoid.