These are tourists visiting Trolltunga Rock, which in English would be something like "The Troll's Tongue". The site lies in the western part of Norway. Every summer around 150,000 tourists come to visit this spectacular mountain.Source: https://subscription.economist.com/DA/PPC/ALLALLRDCD/ALL?gclid=COOntqCD3tQCFc3KsgodH_0OPA