Russian Caucasian runner rug, Originating from the Caucasus region between the Black Sea and the Caspian Sea.
Origin: Caucasus region (likely Azerbaijan, Armenia, or Dagestan)  
Size: 3 feet 3 inches by 9 feet 10 inches (a typical runner size)
Material: Wool pile on a wool foundation (common for Caucasian rugs)  
Design: Characteristic Caucasian tribal design elements:
Strong geometric motifs, including stylized animals, "Memling guls" (octagonal medallions), and hooked motifs.
Bold, contrasting colors, with reds, blues, yellows, and ivories prominent.
Striking abrash (color variations within the same color), often seen in Caucasian rugs due to hand-spun wool and natural dyes.
Condition: The rug appears to be in good condition for its age, with vibrant colors and minimal wear visible in the image.
Potential Value Considerations:
Age: Caucasian rugs from the late 19th to early 20th century are highly valued.
Condition: Good condition with minimal wear and tear increases value.
Weave & Knot Density: Caucasian rugs are known for their durable construction and relatively high knot density.
Colors & Dyes: Use of natural dyes and the presence of abrash are desirable characteristics.  
Authenticity & Tribal Origin: Identifying the specific weaving group or tribe can add to its value.