A large and compact crowd reaches the fire line and runs around circle.
At that moment, the real danger is that many people pushing from outside (to get closer to the fire) are causing those inside to be pressed towards the danger zone of the fire, which is still very hot.
That's why i don't like to be there, near the fire, when the crowd is dense and uncontrolled. So I battled my way out, and returned a bit later.
Photo taken at the Burning Man 2012 festival (Black Rock Desert, Nevada).