7 September 2021
Jeori: a large highway landslide in Shimla district, Himachal Pradesh
Yesterday (6 September 2021) a large landslide blocked National Highway 5 at Jeori in Shimla district, Himachal Pradesh in northern India. The landslide, which occurred at about 9 am, did not cause any casualties. This landslide is particularly interesting as it was caught on video from at least four different angles. The first was collected by someone located on the road itself, fortunately a safe distance away:
— Vipin Kumar (@chauhanVKgeo) September 6, 2021
Meanwhile, another video was captured from a greater distance away, which provides less detail but gives a better appreciation of the process:-
Earlier today, a massive landslide occurred at Jeori in Himachal Pradesh's Shimla. The Shimla-Kinnaur national highway has since been closed. No loss of life reported yet. #Landslide #HimachalLandslide
— The Weather Channel India (@weatherindia) September 6, 2021
And a third video was captured from the other end of the road:-
— Rajinder S Nagarkoti (@nagarkoti) September 6, 2021
And a further video was captured further along the road:-
Today's Landslide video Near Jeori , Shimla . NH 5 blocked (Shimla-Kinnaur)
— Weatherman Shubham (@shubhamtorres09) September 6, 2021
I am not sure I’ve seen a landslide captured from four different perspectives before, so this is a cool event.
Photographs of the site in the aftermath of the landslide site, extracted from one of the videos, suggest that the road was on an artificial bench with an unsupported cut slope above:-
Note the small pile of debris on the road before the main collapse occurred. This indicates that there was some precursory deformation, which presumably provided warning of an impending collapse.
The landslide appears to have occurred in dry weather, but we are in the tail end of the monsoon, which may have played a role in progressively weakening the hillslope.
Works are under way to reopen the road. As usual, these operations carry considerable risk.