The Tour de France descended into chaos Saturday after a careless fan caused a massive crash at the event when their sign hit one of the riders.
The fan was posing for the camera with the sign, and not watching the race when a rider collided with the sign.
With all the riders packed so close together, the impact of the crash was massive.
At least one bike was damaged as a result of the crash. It's unclear whether any riders were seriously injured in the incident.
Tour de France started Saturday
The Tour de France kicked off Saturday, and will run through July 18.