The most detailed description of one of the largest cultural objects of Koptyakovo - Shaitanskoye Lake II. And, indeed, among archaeologists there is a point of view that the smelting of metal at the sites in Samus culture and Koptyakovo was accompanied by rituals of shamanism, that is, for the taiga population this process seemed like a kind of miracle.
https://elar.urfu.ru/bitstream/10995/854...r172864724
By the way, a burial ground was discovered there. Moreover, half of the burials were performed according to the rite of cremation, almost half were cenotaphs, and only one was performed according to the rite of inhumation. The ritual of cremation was clearly brought from the steppe. In the Alakul and Abashevo cultures, cremation was not often used. However, there is such a culture as Volsk-Lbishchevo; practically no burials of this culture have been found. Also, no burials of another forest belt culture were found - Chirkovo. So it remains to be seen what kind of steppe culture mixed in the Urals so that the Koptyakovo culture eventually emerged. This also applies to the donor language.
https://elar.urfu.ru/bitstream/10995/854...r172864724
By the way, a burial ground was discovered there. Moreover, half of the burials were performed according to the rite of cremation, almost half were cenotaphs, and only one was performed according to the rite of inhumation. The ritual of cremation was clearly brought from the steppe. In the Alakul and Abashevo cultures, cremation was not often used. However, there is such a culture as Volsk-Lbishchevo; practically no burials of this culture have been found. Also, no burials of another forest belt culture were found - Chirkovo. So it remains to be seen what kind of steppe culture mixed in the Urals so that the Koptyakovo culture eventually emerged. This also applies to the donor language.