So, if you're looking at a human being as an isolated entity (perhaps soul) within a reality defined solely by that individuality and no higher context, then death as we commonly talk about it (the irrevocable shut down of a prescribed set of neurological functions) really does seem like 'The End'. From my point of view in this frame of reference, i think you have to go with 'Unknown'... There's no-one made it back after a substantial period of 'death'.
Another sort of framework for defining your humanity, your mind or soul perhaps, could be as some sort of agent which acts as a node within a knowledge-and-understanding-seeking network. This 'agent' collects and imperfectly passes on some of the information that it is exposed to at the very least and can 'consciously' or 'subconsciously' (whatever those terms might mean in this context - and i really want to go Germanic and use 'mindfully' or 'unmindfully' but, i suppose that's a bit too out of the norm for this sort of stuff) act upon and transform the information at its disposal and pass this 'new' information on to other members of the network.
I think this might be something towards what Baraka_Guru (to my eternal shame, I only recently realised the reference in your/his name...
) was referring to with regard to Mr Shakespeare or Newton, Hunter S Thompson? Something towards a memetic/pragmatic network of culture?