Antarctica is the country with the highest average elevation.
Antarctica ( UK English [ ænˈtɑːktɪkə ] or [ ænˈtɑːtɪkə ] , US English [ æntˈɑːrktɪkə ] ) is Earth 's southernmost continent . Antarctica , on average , is the coldest , driest , and windiest continent , and has the highest average elevation of all the continents .