The following remarks on the South Pole area were written by Bowers in the Meteorological Log, apparently on January 17 and 18: “Within 120 miles of the South Pole the sastrugi crossed seem to indicate belts of certain prevalent winds. These were definitely S.E.ly. up to about Lat. 78 deg. 30’ S., where the summit was passed and we started to go definitely downhill toward the Pole. An indefinite area was then crossed S.E.ly, S.ly and S.W.ly sastrugi. Later, in about 79 deg. 30’ S., those from the S.S.W. predominated. At this point also the surface of the ice-cap became affected by undulations running more or less at right angles to our course. These resolved themselves into immense waves some miles in extent,[307] with a uniform surface both in hollow and crust. The whole surface was carpeted with a deposit of ice-crystals which, while we were there, fell sometimes in the form of minute spicules and sometimes in plates. These caused an almost continuous display of parhelia.
“The flags left a month previously by the Norwegian expedition were practically undamaged and so could not have been exposed to very heavy wind during that time. Their sledging and ski tracks, where marked, were raised slightly, also the dogs’ footprints. In the neighbourhood of their South Pole Camp the drifts were S.W.ly, but there was one S.S.E. drift to leeward of tent. They had pitched their tent to allow for S.W.ly wind. For walking on foot the ground was all pretty soft, and on digging down the crystalline structure of the snow was found to alter very little, and there were no layers of crust such as are found on the Barrier. The snow seems so lightly put together as not to cohere, and makes very little water for its bulk when melted. The constant and varied motion of cirrus, and the forming and motion of radiant points, shows that in the upper atmosphere at this time of the year there is little or no tranquillity."[308]