Any chance that’s white walnut (butternut?) Wood has the hollow pith like black walnut but the bark and grain color looks off.
For firewood purposes I think they’re probably the same. I’m probably biased towards seeing white walnut because I just used some that I milled for trim around my hearth, after taking the carpet out and laying down laminate flooring.
I think its both BW & WW in my pic. I know I scrounged the BW (pictured) back in July and if my badly failing memory serves me correct I recall scrounging some pieces of white walnut somewhere in recent months
Yes similar in btu's. the splits pictured had been put aside for bundle wood inventory. Most of the BW had some twist and went in general cordage. WTH did I get white walnut??? Driving me nuts as now I remember finding it.