There are people that explore what you call 'hell' in groups and afterwards they compare notes (that is why I think they are genuine)...
here is a nice hell example (focus zone 23-26) where they go exploring:
www.afterlife-knowledge.com/maxhell.html
here are also more explanations about the focus zones:
www.afterlife-knowledge.com/nexusart.html
In short: hells and hollow heavens are created by group consciousness projections and attract similar vibrating souls (after death) like a magnet...
what is interesting is that most of dead people don't even know that they died, so their lack of knowledge makes them wander around hopelessly for a
long, long time...
other important thing (what they say) is that
HELL IS NOT ETERNAL!!! anyone can get out if they wish, the problem is that 'souls' are trapped
all by themselves, not by outside forces/demons/devils, etc...