Monday, 16 November 2015
After Crowley Lake reservoir in California was completed in 1941, strange pillar-like formations emerged. The stone columns were up to 20 feet tall and connected by high arches, as if part of an ancient Moorish temple.
In the ensuing decades, the columns were regarded as little more than curiosities along the eastern shore of the Los Angeles Department of Water and Power reservoir. But now answers are emerging from a study at UC Berkeley. Researchers have determined that the columns were created by cold water percolating down into hot volcanic ash spewed by a cataclysmic explosion 760,000 years ago.