The 90-meter-high hill in Kiviõli Adventure Centre is one of seven ash heaps in northeastern Estonia that were created as a byproduct of shale oil production, ETV reported.

The ski area, which cost 6 million euros to build, currently includes two lifts and there are plans to build more. Representatives said the longest slope could span 700 meters if they get enough snow cover. There is also a 120-meter half pipe.

An executive for the center, Janek Maar, said there are plans to use the hill for summer activities as well, including offroading and hiking.