A portion of the Palos Verdes Peninsula in Los Angeles County is slipping toward the Pacific Ocean as much as 4 inches per week.

New research from NASA shows that the Palos Verdes Peninsula, an area in the South Bay home to cities like Rancho Palos Verdes, Rolling Hills Estates and San Pedro, is shifting toward the ocean. Data from NASA’s Jet Propulsion Laboratory airborne radar shows that during a four-week period last fall,

The peninsula is home to Rancho Palos Verdes, which faced sweeping power shutoffs last year due to land movement.