National Geographic : 1944 Mar
Jacoby from Paul G.Guillumette Long Ago a Silt-powdering Wind, Acting Like a Giant Flour Sifter, Blew This Entire Landscape infrom aDesert Near Lanchow, this is a part of northwest China's loess lands. So soft is the earth that streams gouge ravines,like that tothe left, hundreds offeet tobed soil. The road is newly made; otherwise it would be a canyon worn so deep that only walls and sky would be visible. Inthe last decade loess lands were formed inthe American Southwest by topsoil blown from the Dust Bowl.