Well I'm looking at your pic, and it all looks like a plank of wood with the bark still on it!
flitch
/fliCH/
noun
noun: flitch; plural noun: flitches; noun: flitch plate; plural noun: flitch plates
1.
a slab of timber cut from a tree trunk, usually from the outside.
Whatever you call them, it makes some pretty good firewood. A rose by any other name, and all of that.
My father used to burn 4 foot lengths in one of his greenhouse boilers. It started out burning coal, was converted to oil, then had a spell of burning wood.