Summer Sock knitting lies before me.
This one is a toughie.
That's the back of the heel this time.  It too has had five winters of real wear.  
That has to be good, right?
PS.  Thanks, Fujiyamamama.  I was still getting comments on them now and again. May think about that pattern again - Potomatomus.
PSS.  There was a hole in the other sock, sole of the heel there.  Clearly I wore that pair OUT. 
