Birdhouse?

On my Saturday run, I hit a couple of loops of the Elm Creek horse trails. I’ve been on these trails many times, but for some reason don’t recall ever seeing the structure in the picture below. It’s not big enough to be a deer stand, it’s only about 3-4 feet long, and barely 3 feet tall. It also has cut-out holes on one side that are about 4-5 inches in diameter.

No idea what it is, if it was some special birdhouse or some other purpose. I took a picture of it though because it was a cool find on my run.

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