1920s

Sunken City - In 1929, the 600 block of Paseo Del Mar began sliding into the ocean. The area continued to slip until the mid-1930s. Sunken City is located about two miles southeast of the Paseo del Mar incident area.

1950s

Portuguese Bend Landslide - The first movements occurred in August of 1956. By September, movement was observed on Palos Verdes Drive South. Movement continued in the 260-acre area until 1959.

1990s

Ocean Trails Golf Course - While under construction in 1999, a 16-acre section of the golf course’s 18th hole slid into the ocean.

2000s

Paseo Del Mar - In December 2009, a chunk of earth fell away from the cliff in a "minislide" along the 1800 block of West Paseo Del Mar, less than a mile from the current incident area.

Sunken City - In July 2010, a chunk of the Sunken City cliff, about two miles southeast of the current incident area, collapsed into the ocean.

2011

Paseo del Mar - On September 19, City of Los Angeles engineers closed a stretch of Paseo Del Mar between Weymouth and Western Avenues after the roadway shifted and sank approximately six inches.