Page "Varna Necropolis" Paragraph 8

According to M. Gimbutas ( 1991 ), " The discontinuity of the Varna, Karanovo, Vinča and Lengyel cultures in their main territories and the large scale population shifts to the north and northwest are indirect evidence of a catastrophe of such proportions that cannot be explained by possible climatic change, land exhaustion, or epidemics ( for which there is no evidence in the second half of the 5th millennium B. C .).

Direct evidence of the incursion of horse-riding warriors is found, not only in single burials of males under barrows, but in the emergence of a whole complex of Kurgan cultural traits.