Swiss officials announced over the weekend that they would halt search operations for 8 missing hikers after a massive landslide near the small village of Bondo, Switzerland. Geologists toured the source area by helicopter and determined it was unsafe to continue the search. The event is referred to as a rock avalanche by the Landslide Blog, and Professor Petley had two links to videos of the event. The first, showing the initiation of the landslide is shown below. The landslide occurred on Piz Cengalo above Bondo on August 25 and resulted in a debris flow 5 km downstream at the town.
The Devil’s Slide Tunnel project is on schedule and on budget according to a news story at ABC7News.com from earlier in June. The video (shown after the break) has a few nice shots showing rock bolting, soil nailing at the portals, and the geologic mapping and laser scanning that happens at the tunnel face.
I also came across a very neat article about how the Ocean Shore Railroad Company was the first to try to cut into the slope along what is now PCH 1 at the Devil’s Slide back in the early 1900s. They were trying to connect the then rural farming community of Half-Moon Bay with San Francisco. The railroad fought the reoccurring landslide and serious rockfalls. Ocean Shore Railroad went bankrupt in 1922 and pulled up its rails, making room for the current highway. (Photo at left from halfmoonbaymemories.com)