The opinion was expressed in 1903 by the authors of the book Turkistan that ancient Taraz (then known as Talas) was situated under modern Taraz. However scarcity of information, inaccuracy of descriptions, and weakness of geography made it impossible to know the location until 1936. Professor Wilhelm Barthold's research established that the location of ancient Taraz was under the Green Bazaar. Further research and archaeological excavations, which were made by an expedition of The USSR Academy of Science in 1938 under the supervision of A. Bernshtam and G. Patsevich to the depth 2–6 meters, made it possible to reconstruct the appearance and cultural – economic importance of ancient Taraz. The latest archaeological data has considerably expanded ideas about Taraz.