Ellezelles, “Pan de bois”. Photograph: Gérard Bavay

Estinnes, adobe wall. Photograph: Gérard Bavay

Haute Ardenne du Nord, Belgium. XVI to XIX century. Photograph: Charles Gheur 

Ardenne Centrale, Belgium. XVIII to XIX century. Photograph: Charles Gheur

Pays de Herve, Belgium. XVI to XIX century. Photograph: Charles Gheur 

Clay-straw construction in the Flemish region. Architect: Herman Remmes - Builder: Peter Willem (Bouwen met Aarde). Photograph: Peter Willem 

Clay-straw construction in the Flemish region. Architect: Herman Remmes - Builder: Peter Willem (Bouwen met Aarde). Photograph: Peter Willem

Training centre in sustainable construction, “Terre Academie”, in Beauraing, Belgium. Architect: Isabelle Prignot. Photograph: Sophie Bronchart 

Training centre in sustainable construction, “Terre Academie”, in Beauraing, Belgium. Architect: Isabelle Prignot. Photograph: Sophie Bronchart

Construction in 2003 realized in Maisoncelles near Beauraing with a wood frame filled with a (ready-made) mix of clay and wood shavings and a pisé wall. Architect: Isabelle Prignot – building company: Novastar sprl. Photograph: Sophie Bronchart 

In 2006, a rammed earth wall has built in the reception hall of the center Source O Rama in Chaudfontaine by the society Druwid (Mickaël Thonnes) with the participation of Archipel Rénovation. Photograph: Michaël Thonnes