Among the things you don't want to meet while descending at speed is a bear. But that's what happened to Quick Step Floors rider Matteo Trentin over the weekend while training in California.
The two-time Tour de France stage winner - who also has a stage of the Giro d'Italia among his palmares - posted a picture of his shattered helmet to Instagram, along with a brief description of what had happened.
The 27-year-old Italian, who rode in the Tour of California earlier this month then stayed to train in the Lkae Tahoe area, wrote: "Always wear a helmet fellas!!it can also happen that during training a bear cross your path when you are in a fast downhill.
"No space to brake so i got an accident with him!! He wasnt a fluffy teddybear."
He added: "Thanks @iamspecialized_road for the fast replacement!! On the road again!!"
Encounters between bears and cyclists are not unusual, but typically happen away from roads.
Earlier this month we reported how a mountain biker in Slovakia had filmed a friend of his being chased by a bear on a trail through some woods.
Simon has been news editor at road.cc since 2009, reporting on 10 editions and counting of pro cycling’s biggest races such as the Tour de France, stories on issues including infrastructure and campaigning, and interviewing some of the biggest names in cycling. A law and languages graduate, published translator and former retail analyst, his background has proved invaluable in reporting on issues as diverse as cycling-related court cases, anti-doping investigations, and the bike industry. He splits his time between London and Cambridge, and loves taking his miniature schnauzer Elodie on adventures in the basket of her Elephant Bike.