A private residence teeters off the edge of Knockash Hill (center) after severe storms washed away the hill on the 1st day of 1997. This is a recently developed luxury neighborhood near Forest Hill, above Ulloa near Portola.
Photos: Chris Carlsson
November 2007, ten years later, the slope has been entirely re-engineered to prevent further landslides, in San Francisco's ongoing effort to thwart nature with its architecture.
Photo: Chris Carlsson