Originally Posted by Gluey33
No you don't have white line disease. It does look like you have some retained sole and a foot that looks due for trimming, not just done.
Can you tell me why you say no? I don't know tons about hoof disease so my post was mostly a guess, but my farrier told me that recessing or cracking white line that you can stick something into is a big huge red flag for white line, and you want to get that fixed ASAP. The deep crease harbors nasties and bacteria, too. If OP can stick something INTO the white line pretty deep, what else would it be? That's certainly not normal or healthy.