I can't decide what's crazier in this video: the nine or 10 bikes that go down at the start of this race, or the announcer's incredulous reactions to it, which include "CARNAGE!" and "a bowling alley with bikes everywhere!"
The crash occurred in September at the Steve Henshaw International Gold Cup Road Races at Oliver's Mount in England. After the race begins we can see the rider in orange drop his bike, which starts a chain reaction that drags down several of his competitors.
The good news is that no one seemed badly hurt in the crash, even though a few riders seem a bit banged up. Still, it's absurd to watch, and the sound of carbon fiber scraping across the asphalt is pretty cringeworthy in and of itself.
Hat tip to Duke Video