It extends over an ancientcharcoal forest area, where charcoal was produced in Roman times. Thick clumps of beech trees cover the former hunting area, scattered with abbey remains, of this rolling countryside with valleys such as the romanticGroenendael . Thissite dotted with lakes was famous for its abbey (14C-18C), where the 14C mysticJ. van Ruusbroec lived. There are many public footpaths.