The photo shows a house that was not burned by the wildfires near the city of Cle Elum in Washington. The photographer, a member of the family, said it looked like a force field surrounded the house, but as a Reddit thread indicates, this escape is a result of following proper preventive procedures in wildfire-prone areas, including -
"In rural areas, clear a fuel break of at least 3 times the fuel length around all structures."In other words, clear the brush and trees around your dwelling to a distance of 3X the height of the trees or brush. By that criterion, virtually every cabin I've ever seen in northern Minnesota and Wisconsin would be doomed, because the ethos here is to preserve as many trees as possible. I grew up in a home that was sited after plotting the location of the trees so that the house could be fitted among them with branches overhanging the roof; as a kid my annual autumn job was to crawl to the roof edges to clean out the leaves that had fallen in the gutters.