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11-07-2023, 09:30 AM
Published 11:33 PM GMT+8, July 10, 2023
ROLLING HILLS ESTATES, Calif. (AP) — A landslide tore apart luxury homes on Southern California’s Palos Verdes Peninsula on Monday, leaving a confused jumble of collapsed roofs, shattered walls, tilted chimneys and decks dangling over an adjacent canyon.
The slide in the Los Angeles County city of Rolling Hills Estates began Saturday when cracks began appearing in structures and the ground. Twelve homes were red-tagged as unsafe, and residents were given just 20 minutes to evacuate.
The pace of destruction increased through the weekend and into Monday.
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The cause of the landslide was not known. But a fissure running among the homes raised suspicion that this past winter’s heavy rains may be involved, Hahn said.
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A landslide that began in 1956 destroyed 140 homes in the Portuguese Bend area of the city of Rancho Palos Verdes, and earth continues to move there. The slide coincided with construction of a road through the area, which is atop an ancient landslide.
Among other notable earth movements on the peninsula, a 2011 slide severed the blufftop ocean road near White Point in the San Pedro section of Los Angeles several months after engineers began noticing cracks and fenced off the area for study.
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Some of the many potential factors include earthquakes, steep slopes, sedimentary soil that is not rock hard, and water percolating down into the earth after heavy rains, the report says.
Human-induced landslide factors include construction without proper grading of slopes, alteration of drainage patterns and disturbances of old landslides.
https://apnews.com/article/california-la...a73e60f016
