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A mortar & pestle from Tuolomne - Bad Archaeology
In 1877, a Mr John H Neale, superintendent of the Montezuma Tunnel Company, was engaged in building a tunnel through Table Mountain, Tuolumne County (California, USA). The tunnel was running through gravel, sealed by lava. Between about 425 and 457 m (1400-1500 feet) from the mouth of the tunnel and between 61 and 91 m …