What looks to be the original floor to a threshing barn. This roof seems to be supported by the use of Queen Posts joining the tie beam. Unfortunately I was not bright enough to make a mental note of this when I was there! But I think these can be seen in the picture.
Uploaded to Geograph by Chris Bendall on 13 March 2011
Photo © Chris Bendall, 13 March 2011. Licensed for reuse under this Creative Commons licence