I have only ever seen aerial photos of crop marks on the web, never one close up in person. Anyone have any experience of them and what they look like?
It's been very dry around here of late and I was recently walking through a field with known hut circles in the next field along. The grass is pretty dry looking at the moment and I noticed a green circular outline on a slight raise in the field. It's roughly the same size as the nearby hut circles and even had a break in the circle in approx position similar to the entrance to the hut circle nearby. Nothing mentioned on Canmore.