I suspect these are probably hoops for wooden barrels.
Mountain Farm Museum
adjacent to the Oconaluftee Visitor Center and near Cherokee, North Carolina.
Great Smoky Mountains National Park, North Carolina and Tennessee
Gallery – Great Smoky Mountains National Park
(click on image for larger version)
Museum information from the National Park Service website:
The Mountain Farm Museum is a unique collection of farm buildings assembled from locations throughout the park. Visitors can explore a log farmhouse, barn, apple house, springhouse, and a working blacksmith shop to get a sense of how families may have lived 100 years ago. Most of the structures were built in the late 19th century and were moved here in the 1950s. The Davis House offers a rare chance to view a log house built from chestnut wood before the chestnut blight decimated the American Chestnut in our forests during the 1930s and early 1940s.
See more of our Image Galleries at Haw Creek.