sentences:  The barbed wire itself had been manufactured during the late 1990s, certainly after around 1980.The purpose of the salting remains obscure, but it may have been inspired by the construction of folly outbuildings "in the style of" ancient religious centres by a mid-19th century owner of the site.Again, the programme shows how this builder made errors in his construction which show that the building could not have been intended to be used for its apparent purpose.