Nice to help,
Charles. In Spain, the storage of hay (both grasses and legumes) is done with a wooden post and sometimes it is covered so that the hay does not lose its nutritional qualities. It receives various names according to the regions: Pallerios, Metak, Hacinas and in my case, Almial. My maternal grandfather, who was a veterinarian and rancher of wild cows, used to make them and when I was little, I helped his cowboys. I remember that we had to leave the horses a little farther away because the dust in suspension affected them and they began to sneeze.
Kind regards.