Originally Posted by
seypat
If you look at the large pic on the BD site, that could be a bonding seam, but, but, it certainly doesn't have paint flicking off like the OP's. Looks like a problem.
I assume the bike has either aluminum or steel dropouts that extend up into the fork somehow. An X-Ray or Ultrasound might give some idea of the structure. However, perhaps there would also be a low-tech method such as using a tap test to try to divine out borders of material composition.