[quote=@VitaVitaAR]
At the very least we need to do the explanation while on the way there if not before we start travelling, so if someone suggests that IC we can do that. But wandering in there without any briefing beforehand is a bad idea.
[/quote]

Does the fact that half the party left for the dungeon count as a suggestion? Because if I was a party leader and I needed to tell them something, I'd just catch up and explain on the road.

Also information about the entrance being trapped would be pretty common knowledge, since we've established the upper floors have been partly cleared out before.