The geographical extent of the culture is vast and difficult to delineate exactly. On its western fringes, it overlaps with the approximately contemporaneous, but distinct, Srubna culture in the Volga-Ural interfluvial. To the east, it reaches into the Minusinsk depression, with some sites as far west as the southern Ural Mountains, overlapping with the area of the earlier Afanasevo culture. Additional sites are scattered as far south as the Koppet Dag (Turkmenistan), the Pamir (Tajikistan) and the Tian Shan (Kyrgyzstan). The northern boundary vaguely corresponds to the beginning of the Taiga. More recently, evidence for the presence of the culture in Xinjiang in far-western China has also been found. In the Volga basin, interaction with the Srubna culture was the most intense and prolonged, and Federovo style pottery is found as far west as Volgograd. Mallory notes that the Tazabagyab culture south of Andronovo could be an offshoot of the former (or Srubna), alternatively the result of an amalgamation of steppe cultures and the Central Asian oasis cultures (Bishkent culture and Vaksh culture).