In 1969, a group of Oklahoma construction workers made an interesting observation. When the manual workers came upon what seemed to be a vast antediluvian structure, they were able to date it back to 200,000 years ago.
The “Old Mosaic Floor” was initially published in The Oklahoman, a daily newspaper, where it was dubbed the “Old Mosaic Floor.”
This mosaic floor was laid up in exactly parallel lines that crossed to create a diamond structure, according to Durwood Pate, a local geologist at the time.
The geologists thought it had to be a natural find, but Delbert Smith, president of the Oklahoma Seismograph Company, swiftly rejected this, claiming that the whole structure was ideally extended to several thousand square feet and was perfectly symmetrical all the way.
Surprisingly, the mosaic floor looked to include aquatic debris, indicating that the area was previously entirely submerged.
But that’s not all: at the same spot, experts uncovered an iron cup inside a 300 million-year-old lump of coal. Frank J. Kennard, who claimed to have crushed a lump of coal with a sledgehammer, made the finding public.