Early colonial Spanish missionaries wrote about this practice .
Only recently have archaeologists such as Johan Reinhard begun to find the bodies of these victims on Andean mountaintops , naturally mummified due to the freezing temperatures and dry windy mountain air .
Early colonial Spanish missionaries wrote about this practice but only recently have archaeologists such as Johan Reinhard begun to find the bodies of these victims on Andean mountaintops , naturally mummified due to the freezing temperatures and dry windy mountain air .