Portuguese Bend Landslide
Posted by: Groundspeak Premium Member TerryDad2
N 33° 44.383 W 118° 22.103
11S E 373244 N 3734137
Quick Description: The underlying rocks, structure, current erosion, and human development have worked together to keep the Portuguese Bend Landslide continuously moving since 1956.
Location: California, United States
Date Posted: 12/8/2007 8:48:32 PM
Waymark Code: WM2QPF
Published By: Groundspeak Premium Member RakeInTheCache
Views: 136

Long Description:
The road is narrow as it passes over the landslide, so there is no possibility of stopping for a quick grab. Cycling is popular long this road and may be the best way to access the coordinates.

Palos Verdes Drive drops down a relatively short steep incline at (N33 44.373 W118 22.155). This marks the edge of the slide.

The road at the coordinates is under constant motion. Cracks form in the asphalt as the soil underneath slide down hill and entire sections move at different speeds. Periodically, the road is repaved and straightened. Each time, the white line marking the right edge of the road is painted straight. Over time this line becomes offset.

Also notice the pipes that parallel the road. These are utilities that are typically underground. However, due to the constant movement in this area, they have been put above ground, presumably so they can be moved and repair easier.

Some sections of the slide have been stabilized by dewatering the soil, however, that technique has been unsuccessful in this portion of the slide.

Prior to this slide, Los Angels County didn’t require geologic evaluations prior to grading. As a result of the slide, new ordinances were passed requiring an engineering geologist’s review of grading.



Waymark is confirmed to be publicly accessible: yes

Parking Coordinates: N 33° 44.602 W 118° 22.781

Access fee (In local currency): .00

Requires a high clearance vehicle to visit.: no

Requires 4x4 vehicle to visit.: no

Public Transport available: Not Listed

Website reference: Not listed

Visit Instructions:
No specific requirements, just have fun visiting the waymark.
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Recent Visits/Logs:
Date Logged Log User Rating  
NakoTacoPatrol visited Portuguese Bend Landslide 5/26/2013 NakoTacoPatrol visited it