Brienz was extremely lucky when the landslide occurred a year ago. But residents are more worried than ever about their village. It is sliding faster than ever before and the damage is getting worse and worse. There is also a threat of new rockfalls – and not just on Brienz. Can engineers win the race against time? ???? Subscribe to SRF Wissen now on YouTube ???? / @srfwissen ⏰ A new episode of “Einstein” every Thursday at 5.30 p.m. More about the video –––––––––––––––––––––––––––––– The great stroke of luck It has only been in the last few months that researchers have been able to reconstruct why Brienz had to be extremely lucky not to be buried. If the landslide had happened in winter, for example, the consequences would have been devastating. This luck also shows how fragile the situation is. It doesn’t take much for Brienz to have to fear natural hazards again. And that is exactly what happened. Too much snow and rain An above-average autumn and a snowy winter have once again brought unpredictable dangers to Brienz. From August onwards, it rained and snowed more than twice as much as the monthly average. And that had consequences. To understand these, you need to know the following: Brienz has been sliding downhill faster and faster for 25 years. The reason is high water pressure in the ground beneath the village plateau. If the village slides away below, the mountain above loses its grip. The precipitation has increased the water pressure to such an extent that the village is now sliding faster than ever. And with it the mountain. The new danger New areas of the mountain are now at risk of falling. The forecasts are not yet dramatic. But it is difficult to assess what the danger will be in 10 years. Because the faster the movements, the faster dangers can arise. One fear: a new landslide could even endanger the neighbouring village of Vazerol. The tunnel of hope But those responsible still believe that a drainage tunnel can save the village. The test tunnel, which initially calmed the village and the mountain, will be expanded to a length of 2.5 kilometers by 2026. Its route has even been slightly adjusted because the geologists have discovered a kind of water basin behind the village that they want to drain as quickly as possible. Will the race against time succeed? ???? Watch directly: O0:00 Intro 02:20 Visit to a resident of Brienz GR 05:28 Review shortly before evacuation 07:55 After the rockslide 08:58 The work of geologist Daniel Figi 11:28 The rockslide in Brienz GR 13:00 Why was the village spared from the rockslide? 15:55 Local resident and farmer Georgin Bonifazi 18:42 How does the drainage tunnel near Brienz GR work? 21:35 What does the landslide mean for farmer Georgin Bonifazi? 25:05 Observing the landslide with a drone 28:28 The exploratory tunnel in Brienz GR 33:45 Interview with the mayor of Albula ________________________ ◾ Director: Andrea Fischli-Roth ◾ Editor: Simon Joller ◾ Moderation: Tobias Müller © 2024 SRF ________________________ This is Einstein: We tell stories that inform, educate and entertain. There are hardly any limits to the range of topics. Everyday phenomena and mysteries are just as important as complex scientific topics. We establish connections to bridge the gap between everyday life and science. Come with us on a fascinating journey into the world of knowledge. A new episode of "Einstein" every Thursday at 5:30 p.m. ???? The "Einstein" moderation team on Insta: ► Kathrin Hönegger: / kathrinhoenegger ► Tobias Müller: / tobias._.mueller ???? Would you like to suggest a topic to us? Then write to us: [email protected] MORE KNOWLEDGE, EVERY WEEK –––––––––––––––––––––––––––– ???? Subscribe to SRF Wissen on YouTube now and activate the bell: ► https://www.youtube.com/srfwissen?sub... ???? More knowledge can be found here: ???? Knowledge to read: https://www.srf.ch/wissen ???? Knowledge to listen to: https://www.srf.ch/audio/themen/wissen ???? Knowledge to watch: https://www.srf.ch/play/tv/themen/wis... ________________________ ???? Channel info: Discover, experience, understand, be amazed – that is SRF Wissen on YouTube. Here you will find fascinating videos from the subject areas of knowledge & science, environment & sustainability and health, nature & animals. All bundled on one channel. ______ Social Media Netiquette from SRF: ► https://www.srf.ch/social-netiquette #SRFWissen #SRFEinstein #Brienz #WissenErleben #Wissenssendung #SRF #Doku