The BBC has posted a cool slideshow illustrating how Welsh archaeologists are studying aerial photos taken after a blizzard in order to find sites of interest. Apparently the snow, and the sun being lower in the sky during winter, make spotting sites much easier.
Photographer Dr Driver left the airport at Haverfordwest, Pembrokeshire, under rain showers, but he found the hills of eastern Wales were covered by a blanket of snow providing “immaculate conditions for earthwork recording combined with the low winter sun”. This image shows the site of Painscastle, near Hay-on-Wye, Powys.
Story: BBC News | Photo: RCAHMW