it depends from culture to culture. may rituals are usually performed. in most cases the person is normally carried from the house to the crematorium on shoulders, then the body is placed on a wooden plinth sort of thing. the body is then covered with lots of wood, normally expensive wood out of respect, flowers, almonds until you cant see any traces of the body, then normally the eldest son lights the wood on fire. you normally stand their an watch out of respect. once again it depends from culture to culture. ashes are then collected and normally immersed into a river. like a big a cycle really ...

A very VERY hot fire for 6-10 hours.

Do a search. There are videos on YouTube.

Here is a detailed one...

https://m.youtube.com/watch?v=kJTclbBKxK...