The theme of the passage is often approached on the mythology(ies).
It is often represented as the crossing of a river or an ocean, remember yourselves "The legend of the STYX"
As we live in a modern and so rapid moment, I want to try to present it as the crossing of a bridge. It's more easier and more rapid.
So I've decided to present you my vision of the passage as the crossing of a bridge.
Have a good journey.