New earthquake study finds San Andreas fault is primed for a big quake

A new study reveals that Southern California's San Andreas and San Jacinto faults are under the highest stress levels in 1,000 years, increasing the likelihood of a major earthquake. Scientists used geological evidence like tree-ring records and sediment samples to model stress accumulation, noting pressure has been building since the 1857 'Big One.' The Cajon Pass is identified as a potential 'earthquake gate' that could connect ruptures between the two fault systems.