Among the enslaved in Bahia, the Hausas…

A rimmed, bowl-shaped pit produced by a large meteorite is discovered in the rolling hills of the Canyon Diablo Region, nineteen miles (thirty kilometers) west of Winslow, Arizona, in 1891.

Five hundred and fifty feet deep, and two point four miles in circumference, "twenty football games could be played simultaneously on its floor, while more than two million spectators observed from its sloping sides."

The object, probably one hundred feet (thirty meters) in diameter, weighing sixty-three thousand metric tons and traveling five to ten miles miles per second (eight to sixteen kilometers per second), releases energy on impact equivalent to 3.5 million tons of TNT.

Most of the object vaporizes, but blasts out a bowl-shaped depression six hundred feet (one hundred and eighty meters) deep and four thousand feet (twelve hundred meters) in diameter, surrounded by a rim one hundred and sixty feet (fifty meters) high.

Drillings reveal undisturbed rock beneath seven hundred to eight hundred feet of fill.

The strata forming the rim of the crater are upturned and covered with the debris of the same bedrock, which shows an inverted stratigraphy.

Its age has been variously estimated at between five thousand and fifty thousand years, but most researchers incline towards the earlier date.

Daniel Moreau Barringer, a Philadelphia mining engineer who becomes interested in the crater as a potential source for mining iron, visits the site in 1902 and becomes convinced that it had been formed by the impact of a large iron meteorite.

Further assuming that the meteor in question is buried beneath the crater floor, Barringer forms the Standard Iron Company in 1903.

He files four placer mining claims with the federal Government, thus obtaining the patents and ownership of the two square miles containing the crater.

Barringer spends 26 years attempting to find what he believed would be the giant iron meteorite, but never finds the metal he seeks.

He does, however, eventually prove to the scientific community that the crater was formed by a meteorite impact.

The object, probably 100 feet (30 meters) in diameter, weighing 63,000 metric tons and traveling 5--10 miles per second (8-16 kilometers per second), released energy on impact equivalent to 3.5 millions tons of TNT.

Most of the object vaporized, although large numbers of nickel-iron fragments from gravel size to 1,406 lbs.

have been found in a 100 square-mile (260 square kilometer) area.

The distribution and composition of several thousand tons of sand-grain size nickel-iron droplets indicate that they condensed from a cloud of metallic vapors.

Surveys show only fragments within the pit, but the 1960 discovery in Meteor Crater of coesite and stishovite, which are high-pressure modifications of silica, helps to confirm the crater's meteoric origin.

The US government deems the Meteor Crater, still privately owned by the Barringer family, a Natural Landmark in 1968.

If there were any humans living in the Southwest at the time of impact, the event must have altered drastically the world of the survivors.

A brief review of archaeological information is the place to seek answers.