The folks wanted a few trees took down in their yard so I gave them a hand. I tried to split a few blocks and quickly realized I couldn't bust through. X27 and maul just bounced off. Is it gum? I tried to zoom in on the buds but it wouldn't focus very well

I have cut and split and cussed a lot of wood in 40 years, but never had any of it that didn't keep me warm.
