That bit about only four poeple being in the pit reminded me of something that occured recently. I attended a "Death Metal Special" compromised of local bands in this area and it wasn't all bad.
However, with there only being about thirty people in attendance the crowd was about three rows deep so when the "moshing" kicked off:
Action swings left,
back to the right,
into the barriers at the front,
sprawl across the floor as there's no back to the pit....