Ice ages and warmer periods shaped the landscape on our course. Most of it we can’t see anymore because time and erosion made them disappear under layers of sedimentation. Valleys that were once hundreds of meters deep are now filled in to form relatively flat roads for our riders. #zurich2024

It was the Last Glacial Maximum, around 24,000 years ago, that shaped most of the course today.Geologically speaking that was basically yesterday. It does give us the opportunity though to make geology even more visible during the long road races. #geology#cycling