The Antarctica is all ice all year round.The highest temperature ever recorded there is zero，at the South Pole.Explorers used to think that a place so cold would have a heavy snowfall.But less than ten inches of snow falls each year.The little snow that falls in Antarctica never melts.It continues to pile up deeper and deeper year after year and century after century.When the snow gets to be about eighty feet deep，it is turned to ice by the weight of the snow above it.