London 2012: BMX crashes - in pictures

Marc Willers, left, of New Zealand makes it safely out of the berm as Joris Daudet of France goes to ground as the pack crash Photograph: Phil Walter/Getty Images

Joris Daudet of France eats dirt ... Photograph: Phil Walter/Getty Images

As the pack come together behind him Photograph: Phil Walter/Getty Images

All of the rest of the pack are involved in the crash Photograph: Phil Walter/Getty Images

The riders struggle to their feet Photograph: Phil Walter/Getty Images

The tumbles continue as Belgium's Arnaud Dubois, below, tastes the tarmac Photograph: Christophe Ena/AP

Quentin Caleyron of France falls at the lip of a jump Photograph: Bryn Lennon/Getty Images

Cyclists leave Argentina's Ernesto Pizarro behind after he loses control of his bike Photograph: Sergey Ponomarev/AP

Maik Baier of Germany crashes into Tory Nyhaug of Canada in a painful looking tangle Photograph: Phil Walter/Getty Images

And then Jelle Van Gorkom of Netherlands goes to ground as he tries to avoid them Photograph: Phil Walter/Getty Images

New Zealand's Kurt Pickard (black) and Ecquador's E.A Falla Buchely (yellow hat) go to ground over a jump Photograph: John Giles/PA

Australia's Khalen Young tries to avoid them Photograph: John Giles/PA

Though he loses control of his bike and comes a cropper himself Photograph: Christophe Ena/AP

Young of Australia struggles to get up after crashing Photograph: Phil Walter/Getty Images

Although he eventually gets his breath back and dejectedly collects his bike Photograph: Phil Walter/Getty Images