"[the Sintashta-Arkaim culture on the W. Siberian plains east of the Urals,] "dated to c.2200/2100-1700/1600 BC", [where] "the earliest attested traces of Aryan material culture "and even of Aryan belief". ..[there we find] "remnants of horse sacrifices (aśvamedha) and primitive horse drawn chariots (ratha, raθa) with spoked wheels [....] a real tripura [....] adobe bricks (*išt) [....] frame houses (which reminds of Rgvedic kula 'hollow, family‘ [....]) [....] Most tellingly, perhaps, at the site of Potapovka (N. Krasnayarsk Dt., near Kybyshev on the N. Volga steppe), a unique burial has been found. It contains a human skeleton whose head has been replaced by a horse head, a human head lies near his feet, along with a bone pipe, and a cow‘s head is placed near his knees. This looks like an archaeological illustration of the Rgvedic myth of Dadhyanc, whose head was cut off by Indra and replaced by that of a horse. The bone pipe reminds, as the excavator has noted, of the RV sentence referring to the playing of pipes in Yama‘s realm, the world of the ancestors"."