Hoge Kempen National Park, the only one in Belgium, is located between Genk and the Meuse River Valley. The park covers over 5,000 acres and is the largest nature and woodland reserve in Flanders. It consists of large pine woods, purple flowering heathland, and big lakes that formed when water filled former sand and gravel pits. The highest spot in the park is 100 meters high, offering breathtaking views of the otherwise flat landscape. The park is home to many rare animals such as roe deer, the swallowtail butterfly, the slippery snake, the European beewolf, which is actually a wasp, and the antlion. There are large boulders and stones that were scattered about by the last ice age, creating a wild atmosphere.