Joaquim Rodriguez claimed victory on a dramatic third day at the Tour de France as he finished ahead of Chris Froome on the Mur de Huy.
The Katusha rider allowed Froome to make the first break on the climb to the summit finish on Monday before countering his move to claim the stage win.
However, the day was overshadowed by a huge crash involving a large number of riders brought a temporary halt to racing as William Bonnet's (FDJ.fr) slip caused a pile up ahead of the first category climb - the Cote de Bohissau.
Four riders were forced to abandon because of their injuries, while others - including Fabian Cancellara in yellow - were able to carry on, the Trek rider handing the leaders' jersey to Froome (Team Sky) at the end of the day.
When the race eventually restarted the Tour experienced a taste of the Fleche Wallonne one-day classic, Rodriguez navigating the remaining three climbs to take victory.
A four-man breakaway moved away early on the route from Antwerp to Huy, but ahead of the opening climb the crash caused chaos within the peloton.
Bonnet suffered a head injury following his fall as the riders behind him all came together, while Simon Gerrans (Orica-GreenEdge) withdrew with a fractured wrist and Tom Dumoulin (Giant-Alpecin) was taken to hospital with a dislocated shoulder.
Organisers called for the race to be neutralised following the accident to ensure medical teams could treat the injured riders and be available for those continuing, so after 20 minutes the race to Huy was restarted.
It took time for the peloton to get back up to their normal speed as crosswinds made conditions difficult, Michael Schar (BMC) and Rafal Majka (Tinkoff-Saxo) taking the first 'King of the Mountains' points of this year's Tour.
Thumbs up for @PuritoRodriguez