In reply to yesbutnobutyesbut:
It's Kara-Keche, Kyrgyzstan.
Possibly geolocated to this very spot (I didn't crosscheck):
https://goo.gl/maps/X8ptCDuuPfwnTd4Y6
I wonder if strip-mining the whole rear side of the mountain had anything to do with it? Wouldn't be the first time, although it could be totally unrelated.
I guess the scientists from 2020 International Summer School on Rockslides and Related Phenomena in the Kokomeren River Valley must be facepalming by now, they missed it just by a month, right in the valley next door:
https://blogs.agu.org/landslideblog/2019/10/15/icl-kokomeren-summer-school/
Jokes aside, huge landslides are apparently quite common in Kyrgyzstan, and sadly very often deadly. In Fergana valley region, they kill around ten people every year, and then there is the Mailuu-Suu city, location of Soviet era uranium mining and processing, with many toxic and radioactive tailing dump sites in the side valleys - if a landslide dammed the side valley there and the dam formed lake burst, it could contaminate the whole valley downstream. Nobody cared much about the environment back during the Cold War - not that we do much better now...