Ritual Tiwah is the procession of ancestral spirits delivering relatives who have passed into the afterlife by purify and remove the remains from the grave to a place called sandung.

This ritual becomes of attractions done by the Dayak people of Central Kalimantan. Tiwah a death ritual for the highest community-level of Dayak tribe in Central Kalimantan (Borneo), especially the Dayak Inland who hold Kaharingan religion as Dayaks ancestral religion.

Tiwah ceremony is held over the death of someone who has died and buried some long time until the remaining of the body is estimated to only the skeleton.

For Dayak, a death procession needs to be continued with the other ritual of improvement, in order not to interfere with the comfort and tranquility of people who are still alive. Furthermore, Tiwah is also aimed to untie the status of a widow or widower for married couples. After Tiwah, customarily they alloed to determine the next life partner or still choose not to marry again.