Tana Mana is a custom prevalent in Himachal Pradesh
, with the belief to stop the spread of epidemics in a village. It generally exists in the villages along the Indo-Tibetan border.
If anyone in the village contracts infectious disease, a boulder of white stone is put in front of the door to let others know that some one is lying ill. The person who enters into the area, who belongs to neighboring village, is checked by the Lama against contagious diseases.