They're there when you get the knife but can also develop, though I highly doubt all of yours developed.
I think it's due to how Northwoods' source for micarta makes their products. It doesn't seem like the same kind of epoxy or suspending solution as other micarta, and they certainly don't layer the suspended material (burlap, denim, etc) as tightly as other manufacturers.
I'm not really a fan of their micarta, but it fits the purposefully rustic aesthetic they usually go for recently.
I think it's due to how Northwoods' source for micarta makes their products. It doesn't seem like the same kind of epoxy or suspending solution as other micarta, and they certainly don't layer the suspended material (burlap, denim, etc) as tightly as other manufacturers.
I'm not really a fan of their micarta, but it fits the purposefully rustic aesthetic they usually go for recently.