The viewing platform on the Sint Pietersberg, the 18m long and 3m wide platform, is part of a 50m staircase that descends from the hill plateau of the Sint-Pietersberg into the ENCI quarry. Marl extraction by the ENCI was stopped in 2018. The cement factory will continue to exist and the quarry will be returned to nature. .© 18 april 2019 Aerophoto-Schiphol Aerial Photography