Yesterday I made a triangular walk from the former south-western terminus of the Forest Railway (1902-18) of which there is only one surviving building and certainly no track. You are forgiven should you not know where this is, so you can look at the map. It’s where the Drève Saint-Hubert meets the Chaussée de Waterloo. Roche Bobois is there.
This walk consists of getting to the Vuylbeek Path (watch out for cyclists until you get there) then walking along it until you reach the unnamed Sentier des Bouleaux. This is the first path you will reach on your right, and you will know you’re on the right one because it climbs quite steeply out of the valley. This path also has pairs of posts from time to time, probably to deter horse-riders and cyclists should either be mad enough to attempt this highly unsuitable (and prohibited) route.
Keep going, crossing the Drève Saint-Hubert until you reach the forest road, Avenue Dubois. This you cross over and pick up the Sentier de Grasdelle which will take you back to the start. Apart from the obvious Monument aux Forestiers, there are other memorials along the way. Can you spot the two jubilee stones along the path, which celebrate the 75th and 100th anniversaries of Belgium?
I highly commend this walk of about 5 km; it is quite lovely. Should you use Komoot, here is the link:
https://www.komoot.com/tour/3125705738?share_token=aQvM37MeZQAgZoITH7IxDkun8LK3FRJmAp37Xuz7ZzaAKf6V6P&ref=wtd&t_s=referral&t_cid=route_share&t_ref_username=2823173647665