[quote=@The Harbinger of Ferocity]
Is there anything from preventing the group from merely approaching the entrance to the area, then hugging the wall to prevent line of sight? Seems more reasonable and less needlessly risky.
[/quote]

Nothing is stopping said plan, though I was just about to go on with the plan the coin had landed on. But perhaps it is for the best I allow you the time to consider this option as well.