Blacks Beach/Torrey Pines real-time erosion
I was randomly scrolling YouTube and ended up watching about half a dozen videos capturing some landslides near San Diego, California, specifically in the Blacks Beach and Torrey Pines area. There's been a ton of rainfall recently and as you watch this, much of it is simply mud and dirt that hasn't been compressed over time to stone, so it's prone to natural mass wasting events like this. The video above goes for about five minutes as the hillside slowly slumps to a lower angle, with lots of the vertical towers of rock and mud tumbling below.
Again, this is mostly natural stuff that is supposed to happen, not particularly human influenced, captured by someone at the right spot at the right time to record it all.