The post conference day trip (September 7) will start by an excursion to the Natural rock cirque Creux du Van. This regional icon has been created by the eroding power of water and ice millennia ago. On top, a breath-taking panoramic view is expecting the hiker. It will be followed by chocolate tasting in one of the most famous chocolate maker in the region. Our trip will lead us afterwards to the asphalt mines of de la Presta (18th – 20th century) and we will finish the day with an absinth testing experience where this typical Swiss alcohol is produced.