The image to me appeared as a form of an embedded center in how the shape was swirling into a six.
by peterthorne moderator
This could be either curved band or perhaps embedded. Its a false-eye. I'd go curved-band on balance as curve dominant but not clear cut.
by cch001 scientist
Whichever pattern you identify this one as (I'd probably choose curved band) it is a fairly strong system, judging by the spiral wrapping