These ancient oxpens used to accommodate pairs of oxen for ploughing. The building and the site was restored after the Ernest Cook Trust took over the Estate in the 1950s. The used to farm with oxen in Gloucestershire up to the 1960s.
The photograph shows Alex Iles, farmer of Park Farm and with his stockman, William Westbury in the early 20th century when the enclosure was in use.
The site appears on 19th century maps but probably dates from much earlier as there is a mention in a 17th century documents for Wurmstalls [animal enclosure] near the Greate Greene.
In the early 2000s the some of the old Cotswold stone tiles were stolen and the photo shoes after this has happened. They were later replaced and the site tidied up and is now a picnic site.