That hole in the wound could be from something like an anchor or anything else screwed in there over a long time, not likely a tap hole.
In terms of that tree falling some day, remember, if your tree falls on a neighbor's home you are responsible. Is it within 75-80' of the neighbor's home? While sugar maples can grow to about 120' tall, that only seems to happen in terrains where the tree needs to reach for light, like in the bottom of a narrow valley.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.