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Southern California Regional Rocks and Roads

Your Resource For Highways, Geology, Railroads, History, Bicycling, And More Throughout Southern California Since 1995. Celebrating 30 Years Online!

  • Southern California Geology
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      • Pictorial Guide to Southern California Highways
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    • Seeking Old Highways โ€“ A Guide
    • Virtual Tour of US 6
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    • Historic Highway 99 Association of California
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    • Ridge Route Preservation Organization
    • Virtual Tour of US 466
    • Historical Tour of State Route 178
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  • About the Website and the Author
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      • My contribution to the Los Angeles Metro Rail System

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  • Site Redesign Coming SoonSeptember 6, 2026
  • Highway 99 Quiz from the 99 AssociationAugust 21, 2026
  • New Video – The Three Ridge RoutesMay 21, 2026
  • New US 99 Video!May 3, 2026
  • Featured Image – 3/15/2023March 15, 2026

Helpful Weather, Road, and Geology Links

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  • USGS Earthquake Information
  • California Integrated Seismic Network Earthquake Map
  • Southern California Fire Resources
  • NWS Hanford Office
  • NWS Los Angeles / Oxnard Office
  • NWS San Diego Office
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  • NWS Las Vegas Office (Eastern CA and Mojave Desert)

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