Strange (to me) grain pattern

[EOLogtruckin]

Here is an interesting grain pattern I found in a Western Hemlock I was cutting. The log is a bit punky but had some interesting spots in it. Any one of you tree whisperers know what it means? I'm the curious sort. CG


 

[EOLogtruckin]

I found another picture. 

[beenthere]

I see circular saw-tooth marks, but not seeing unusual grain pattern. Or do you refer to the lighter (white) streak associated with the insect boring hole?

[Ben Cut-wright]

All the white streaks in your first photo appear to be associated with knots.   This would seem to indicate early stage "white rot" fungi.

[EOLogtruckin]

Ya sorry I meant pattern across the grain, not grain pattern. I noticed the black spots associated with the light streaks of wood but couldn't tell if it was insect damage or something else.
Ben Cut, I am not familiar with white rot, I'll have to do some research on it.

 Thanks for the input.