Climbing has been limited!
Area is under maintenance of UBS, the Belgian Speleo Union.
Park as indicated or in the village.
Red trail: after parking in a safe manner along road N806, walk back around the corner towards Bomal. Enter the forest, go through the ditch and traverse along the field. There is a very faint path which might be too overgrown in summer. When there is not too much vegetation, this is the easiest approach.
Blue trail: Park in the village and take the street heading West. Pass a goat farm (and buy goat cheese cause it's delicious - skip this step if you're vegan), after about 15mins walking along the forest road, there is a faint and steep path going left and down towards the cliff.