Name: Joy Hall Hempstead, TX (Zone 8b) Lonesome Pine Farm
A larder? With so much dark it could have stored herbs, breads, meats, vegetables maybe.
Is the roof original? Could it have had a chimney? Could it have been a big smokehouse?
Close to the house and low light makes me think storage.
Joy
People, like sheep, tend to follow a leader - occasionally in the right direction. Alexander Chase