The ancient walls of Berkeley (often referred to as the "Great Wall of California") remain a long-standing unsolved mystery. It is still not known who and why built them, and no serious scientific research has ever been carried out. Could they be evidence that an ancient advanced civilization once settled in East Bay?
Stone walls up to 1.5 m high consist of boulders of different sizes (some weighing up to a ton). They are not continuous or high enough to serve as a fence or protection. What is clear is that the boulders are very old - heavy stones have sunk deep into the ground and are overgrown with lichens.
Stretching over 80 km, the ancient walls run up the East Bay Hills from Berkeley to San Jose, USA. Their winding path through the entire Auckland Upland goes deep into Mount Diablo, where they encounter mysterious stone circles up to 10 meters in diameter. At one point, the walls form a spiral 60 m wide, surrounding a large boulder.
Spanish settlers in the area reported that the “fence” was already in place when they arrived. The local Ohlon Indians say the same thing. In 1904, Professor of Oriental Languages at the University of California, Berkeley, John Fryer, stated that the structure was undoubtedly the work of settlers from China and resembled the Great Wall of China. It has also been speculated that early missionaries built it. According to another version, it is the former separator of the territory of Indian tribes.
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There are many hypotheses - too little evidence. Unfortunately, the mysterious building has not undergone a thorough scientific examination. Archaeologists and scientists have not yet investigated this curious and interesting object in more detail. At the moment, the ancient stone wall of Berkeley remains a North American unsolved mystery.
