Skiers use a skiing slope on top of an incinerator plant, in Copenhagen, Tuesday, Feb. 12, 2019. An artificial ski slope on an incineration plant that doesn't emit toxins is being tested by skiers and snowboarders 85 meters (279 feet) above the otherwise flat Copenhagen. The lower half of the slope at the Amager Resource Center opened on a snow-less Tuesday for two days’ of test runs.
Skiers use a skiing slope on top of an incinerator plant, in Copenhagen, Tuesday, Feb. 12, 2019. An artificial ski slope on an incineration plant that doesn't emit toxins is being tested by skiers and snowboarders 85 meters (279 feet) above the otherwise flat Copenhagen. The lower half of the slope at the Amager Resource Center opened on a snow-less Tuesday for two days’ of test runs. Ritzau Scanpix via AP Mads Claus Rasmussen
Skiers use a skiing slope on top of an incinerator plant, in Copenhagen, Tuesday, Feb. 12, 2019. An artificial ski slope on an incineration plant that doesn't emit toxins is being tested by skiers and snowboarders 85 meters (279 feet) above the otherwise flat Copenhagen. The lower half of the slope at the Amager Resource Center opened on a snow-less Tuesday for two days’ of test runs. Ritzau Scanpix via AP Mads Claus Rasmussen