Indoor ski slopes are found in several countries, proving a climate controlled environment can be maintained in which snow can be manufactured using a snow cannon, enabling skiing to take place year-round. The world's first indoor slope was Snowdome Adelaide, formerly known as Mt TheBarton, in Adelaide, Australia, which has since been removed due to running costs. The world's largest indoor ski area is SnowWorld Landgraaf, the Netherlands (opened 2001) with a total of 35.000 m² of snow. In 2003, the first indoor snowboard FIS WorldCup contest was held in SnowWorld Landgraaf.