What is this?

[beauregaardhooligan]

I couldn't find a good thread to post this under, so if someone has a better suggestion, please let me know.
We've been harvesting lots of ash for firewood lately thanks to the EmeraldAshBorer so we thought that's what this was. After cutting it down and running it through the log splitter, it is definitely not ash. The wood is super dense and very heavy, kinda red, almost orange, and it's so stringy it fights the logsplitter wedge almost to the end. Ash tends to pop apart as soon as the thick part of the wedge gets to it.
Also note the pic without the bark. The EAB leaves a distinctive, wandering track when it eats away the cambium. The bug that killed these trees leaves a radiating starburst type of track under the bark. The standing dead tree's bark will fall off in big sheets as a result, just like the EAB's victims.
These trees are long dead and perfectly seasoned for firewood, but without the leaves it's really hard to tell what it is.
Any ideas?