I must say I had no idea how old these type of buildings were but I have recently been informed that they are probably from the end of the 19th century or the early part of the 20th....so old! It seems to be the roofs that go first but the walls are usually in very good condition. They are mostly dry stone and look as strong as the day they were built. It's a shame that there's never going to be anyone who will want to make use of them as a home again. They seem mostly to be empty or used as animal shelters...sad.