I have a maple and linden (I think) trees near each other in my backyard with some bad spots in each that I just noticed last year. The first pic is of the Linden and other two are of the Maple. Any ideas what caused this or who I’d ask? We live in Ankeny. I think the trees are about 25 years old. Looking at the earl may website maybe sunscald damage, but the trunks seem ok...