According to Upinder Singh, the Gandhara grave culture is similar to the one in the Ghalegay caves during their V, VI and VII phases.Singh, Upinder, (2008). A History of Ancient and Early Medieval India: From the Stone Age to the 12th Century, Pearson Education, Delhi, p. 212. Rajesh Kochhar says it may be associated with early Indo-Aryan speakers as well as the Indo-Aryan migration into the Indian Subcontinent, which came from the Bactria–Margiana region. According to Kochhar, the Indo-Aryan culture fused with indigenous elements of the remnants of the Indus Valley civilization (OCP, Cemetery H) and gave rise to the Vedic Civilization.
