Tutti 1 nodo visualizzati.
http://escaladeenbelgique.blogspot.com/2019/02/escalade-en-belgique_24.html
https://web.archive.org/web/20120918022103/http://www.infos-escalade.be/pierrediable/index.htm
http://nl.belclimb.be/massives_detail.asp?cragid=134
