Not to be a stick in the mud, but the tree you're calling an Elm looks like Boxelder to me, and it's wood is reddish inside. Of course I could be wrong, my wife tells me I am frequently.
That looks a lot like a eucalyptus that red chit is why we call them gum trees! It can be quite sticky. I once found a pocket in a gum tree that was so sticky that it gumed up the chain and sprocket nose on my 088. I had to remove the bar and chain, then scrape out the groove with my screntch to get things going again! Sent from my iPhone using Tapatalk
I just did a quick check on your boxelder call and I have to disagree. According to what I found, the boxelder has compound leaves. This tree had simple leaves. I did try to split a little of it and it was a royal PITA. I could hit it hard with the X27 and nothing would happen at first. Then it would show a crack and eventually I could cut through all the fibers to separate the pieces. It didn't really split but I could cut the pieces apart. Internal colors was simple. The cambium layer and maybe 1/4 inch of fairly new wood was almost white. The rest was a ruddy brown color uniformly all the way to the first year's growth ring. The day the tree was felled, that ruddy brown part had a distinct reddish color to it. A question for all, am I better off waiting for some drying to happen before I split it or should I be attacking this stuff while it's still green?
Oh K!!!! I thought Ive seen some unreal but this is an entirely different picture. Looks like mama's preserves coming outta there!!