To be honest I first thought it was hazel except for the extremely tight grain that bit has.Cheers @Mesquite , I know what you mean. The closest bark I can find is hornbeam, with maple a close second, and ash being an option. It's possible the dark wood is actually fungus driven, which may open the spectrum of wood species?
My money's on willow now. Which would tie in with the pink change of colour.
But, that doesn't tie in with the grain being tight?
Heck, what do I know? I like a puzzle though!
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