Word to describe a crowd fallen to the ground?

Question

Is there a word to describe a crowd fallen to the ground? You know, like a heap of people that have fallen due a stampede or the like.

I am using "melee", but it doesn't seem to carry the sense of lying on the ground.

For example: A rush for the gate created chaos, resulting in a great number of people left in a ___________.

EDIT: The previous example, typed by Chappo, catches the idea pretty well. Nonetheless, let me put that in a more detailed situation:

Here is, a group of, say, twenty knights walking down a path and then, all of the sudden, a dragon come out from the woods in front of all of them. The first ones noticed the threat immediately, so they start walking backwards, but those at the back hadn't notice it so they are either stopped or still waking forward. So, in this struggle, some fall down to the ground, but then others fall onto the ones that have fallen before, until there's a heap of knights.

Hope you get the idea. TIA.

Answer 1

dogpile

Wiktionary:

Noun dogpile ‎(plural dogpiles)

A mound of people, especially people who are fighting or celebrating.  

1977, Billy Knott and James Tate, Lucky Darryl1, ISBN 0913722103, page 7: The crowd lept into a wrestling dogpile, each trying to grab as many of the black slips as possible.

yourdictionary.com:

dogpile
noun

The definition of a dogpile is a heap of people or things

An example of a dogpile is a bunch of football players piled together in a struggle for the ball.