White Horse Revival

According to the Daily Mail, the famous Alton Barnes white horse landmark is being restored with 150 tons of chalk. It was last refreshed 25 years ago. A recent story in the Telegraph states that an older landmark, Osmington White Horse, was damaged by a 1989 attempt to refresh it as part of a television challenge involving teams of Scouts. I wonder if geospatial technologies have improved our ability to identify and possibly repair megalithic and similar sites.