Village rugs from a group of villages in the Azerbaijan region of Iran, at the western edge of the Heriz weaving area and named for the village of Karaja at their center. Woolpile on a cotton foundation (very old pieces may have a wool one), Turkish knot and single weft, so the pile is thinner and softer than the usually double-wefted Heriz, and knot density is low to medium. Two bold geometric medallions with hook-like edges typically alternate down a runner, often on a different ground color with each repeat, and on wide rugs the repeated medallions read as a geometric allover, in orange-reds, blues, creams and browns. Their soft, thin pile and great lengths, some over 20 feet (6 m), make them popular as hallway and stair runners.
A construction in which the weaver passes just one weft thread between successive rows of knots. Because the warp is not fully covered, the back of the rug shows a zigzag of small white foundation specks, an easy way to recognize it, and the pile tends to be thinner and lower than in double-weft weaving. Single weft is standard practice in the greater Hamadan area, from Hamadan, Karaja and Mehraban rugs to Senneh and many Kurdish tribal pieces, and in the Hamadan-influenced type of Malayer rug.