The Dutch rider finished the stage with gauze wrapped around his face, covering his bloodied nose. He crashed on the descent of the Col d'Agnes, going over the bars into a ditch face first.
He was able to get back up and finish the stage with the main 'gruppetto', 26:45 down on stage winner Jelle Vanendert.
Following the stage, he said via Twitter, "I'm ok so far. No fractures. Only future scars. Will see tomorrow if a start is possible. Thanks for all the support."
He was taken immediately after finishing by ambulance a the hospital in Foix, where it was determined he sustained no broken bones. He suffered abrasions to his hands and back as well as a deep gash to his nose. His team's medical staff and management will decide if he is fit to continue, his team said on its website, Rabosport.nl.