National Geographic : 1938 May
HOME TO THE HUMAN MOLES OF KANSU PROVINCE IS SIMPLY A HOLE INTHE GROUND Opening out of the square courtyards are the man-made caves in which live the isolated Chinese peasants of the loess country. The arrow points toone ofthe stairways leading below the surface into the yard at the left. The subterranean dwellings are carved out of the hard soil. No mortar isused, but sometimes alittle water is applied to smooth the walls. The farmer in the foreground is running to safety upon the approach of the airplane-probably the first heever encountered (p.596).