Building into the earth in Iceland

"Turf homes may seem like something ancient but they are not that far off in time. In 1910 half of the Icelandic nation lived in turf homes...

Due to lack of trees in Iceland, building out of turf was a popular building material and thick turf walls were useful to ward off the cold."

Núpsstaður is the eastern most farm in West Skaftafellssýsla.
It's also the place where one of the only remaining turf churches is in Iceland. 

https://icelandmonitor.mbl.is/news/culture_and_living/2019/01/15/iceland_s_traditional_turf_houses/