[tingle]

Patrick Tierney's "The Highest Altar" [1] develops a very similar thesis, with first-hand experience by the author.

Wikipedia provides some material on child sacrifice by the Incas in e.g. [2] and [3].

[1] https://www.latimes.com/archives/la-xpm-1989-10-08-bk-201-st... [2] https://en.wikipedia.org/wiki/Plomo_Mummy [3] https://en.wikipedia.org/wiki/Children_of_Llullaillaco