Which one do you mean? The one before the cobblestones wasn't bumpy, just a couple of jumps. The cobblestones are ancient, time did that. The forrest road after that is how forrest roads get in Portugal, distorted from tree roots below.
There is a reason why "adventure" bikes have been popular in Portugal since forever, road surfaces!
Thanks, but they'll stay colorless and black for now, they do look nicer than in that video in person. The bike is filthy from winter and mud.