This is a restored “blackhouse” on the Isle of Eigg, off the west coast of Scotland, where we spent a week in May, 2016.
Blackhouses were the dwellings of “crofters” or farmers on Scottish Islands, in the Highlands, and Ireland.
From Wikipedia: “(They)…were generally built with double wall dry-stone walls packed with earth, and were roofed with wooden rafters covered with a thatch of turf with cereal straw or reed. The floor was generally flagstones or packed earth and there was a central hearth for the fire. There was no chimney for the smoke to escape through. Instead the smoke made its way through the roof. This led to the soot blackening of the interior which may also have contributed to the adoption of name blackhouse.…”