I scored some rounds last week and am in the process of splitting them. Perfect day to split....low 30s, woods nice and frozen...splitting nicely. Anyway the lady I got the rounds from told me she thought it was mullberry but wasnt sure. I havent seen this type of wood before...but ive only split pine, sassafrass and silver maple so far. Split and side of round close up of split (very yellow inside...kinda looks like a sponge cake or something similar) close up of bark I am in SE PA.