You wash and dress the body, place it in a coffin, and bury it.

While this may sound terrifying, those who participate report an overwhelming feeling of closure, especially when compared to standard burial.

Dry ice can preserve a body for days before it's time for a ceremony.

It is a frequent choice of those with terminal illnesses who are able to plan their own demise.

Here's a couple of handy resources.

It's the oldest burial practice known.