In April this year a tractor broke through the roof of a stone built chamber under a field at Crantit Farm in Orkney, uncovering an apparently undisturbed Neolithic tomb. The excavation of this amazing site is being undertaken by Glasgow University for Historic Scotland and is possible to follow on the Internet the dig as it progresses.
     Archaeologists working at the Crantit burial chamber have already found well preserved cremated bones in a sealed stone coffin thought to date back 4,000 years. However, one of the most exciting discoveries has been a 'light box' designed by the makers of the monument to 'wake' their ancestors at the time of the winter solstice. This is the first such device found in Britain, though a similar feature was found at Newgrange in Ireland.

Sources: The Scotsman, The Herald (Glasgow)