According the the Natural Sciences Department at Cal State University Long Beach, this is a translational landslide. Slides like this move pretty slow. This one, in particular, has moved about 600 feet over the past 50 years. The motion is enough, however, to keep the road builders and line painters busy along this stretch of Palos Verdes Drive South. After a few months movement, however, it looks as it does in this shot taken by Damsel last week.
When you build on this slide, the view is great, but the house gets drafty after a while – and ultimately gets wet.
This residence has become a ‘mobile home’.