For a similar practice that we actually know happened, Japanese self-mummification is fascinating and gruesome: https://www.damninteresting.com/sokushinbutsu-t

For a similar practice that we actually know happened, Japanese self-mummification is fascinating and gruesome: https://www.damninteresting.com/sokushinbutsu-the-ancient-buddhist-mummies-of-japan/ https://www.damninteresting.com/sokushinbutsu-the-ancient-bu...