Spots I have scouted around Wallonia, with the honest access notes and the light that makes each one worth the trip. The map is a convenience. The list below is the real thing, and it works without it.
Former satellite telecommunications earth station on Rue de l'Antenne in Lessive (Rochefort). An iconic abandoned site on private property: not to be explored without permission.
A 216 metre transmitter mast on the heights of Liège, my highest point climbed. An active technical site: no visits.
A 50 metre Meuse limestone cliff above the river between Huy and Amay, climbed free. Around 120 routes managed by the Club Alpin Belge. Regulated access: 25 climbers per day, no bivouac.
Exact coordinates shared on request, to keep the fragile spots fragile.