Atlas Rural Carpets
"The region's rugs are almost exclusively knotted using symmetrical knots over two warp threads, with Berber knots only used very sporadically. Both the pile yarns and the typical five to ten wefts feature loose spinning, which gives the rugs their characteristically soft, blanket-like character and accentuates the wool's shine in the flat pile with a height of roughly twenty mm (0.8 in.). The loose structure supports the picturesque quality of the surface but also significantly reduces the service life, which is why very few rugs from before 1970 have survived.
Today the group of rugs with a natural white ground is most widespread in the region. In the older examples from the 1960s and 1970s, the warp, weft, and pile consist of white wool with designs usually made from undyed brown and black wool..." - Gebhart Blazek