National Geographic : 1933 Jun
© National Geographic Society Photograph bySidney D.Gamble IN WET WEATHER, AxLE-DEEP MUD; IN DRY WEATHER, DUST! Most of north China's roads are unpaved tracks across the country where the soil is fine-grained and, when wet, exceedingly sticky. The cart wheels are made with narrow tires so they will not gather heavy loads of mud. As a consequence, the roads are soon badly cut up with many "chuck holes" pass able only with the almost indestructible "Peking cart."