Game specific rules may vary on where the death area is and how it plays out. Generally speaking, a player walks to the designated death area and follows the instructions per their game campaign. It may be that they need to interact with an NPC, or perform certain actions. Other players may be able to give the dead character benefits to use when they face a challenge in the afterlife phase of the game. Ultimately players should consult their setting's rules regarding how death works.
Regardless of the mechanics that bring you to the Death Area, all campaigns include Final Death, which can result from being unable to escape the Death Area.