This was a new discovery for me, just this morning - following a hill-track which I spotted years ago but never tried until now.
This was a summer temporary dwelling, or shieling, and a number are scattered on both sides of the high valley I was following. They probably date from the 18th and 19th centuries - people would come up here in the summer with their sheep and cattle, to take advantage of the rich summer grazing.
If anyone has an interest in this kind of thing I would be delighted to take them there. The hills are the Tarmachans, seen from the north, and with just the lightest dusting of new snow on top of the old seams of spring snow - iron-hard in the morning until the sun starts to soften last night's freeze..