To those who looked on, it was proof that Khamtrul Rinpoche had indeed reached a high level of spiritual attainment, one only surpassed by the ultimate triumph of achieving the 'rainbow body' whereby at death the whole body is de-materialized, leaving nothing behind but the nails and hair. Such things could well be dismissed as spiritual science fiction were it not for the plethora of eye-witnesses and factual documentation to back them up.