Welcome @Blackop555 Not sure what it is, other than TALL! Horkn plays with basswood, maybe he'll chime in.
Yep, basswood. It is nice burning wood, but only 14 mbtu's per cord, so low on the btu scale. But, that's a lot of wood, even if it's only really good for shoulder season stuff. Here's the one I have cut into rounds. Mother nature brought it down, so I might as well take it and turn it into firewood.
Mine is not down yet. But as you see is on its way on its own. Has heavy face lean. Barber chair prone? How do you id basswood
Light weight wood, white Heartwood, that reddish inner bark. They usually grow in groups, although the one I have cut up was a loner. The trunk broken off in your pic is another reason I say basswood. It's not very strong. The leaves are a dead giveaway, but the bark looks like many more desirable firewood. I think they are less prone to barberchair than many species, and simply will snap off.
There's a good chance that thing is hollow. I cut one down that looked like that, It had 6 squirrels living in it. I made a planter out of it.