Alcatraz Penitentiary - SOLD 2.77" Showcase Concrete fossilplant It would not be until

It would not be until 1933 that the scientific community finally recognized the site as being formed by meteorite impacts

the Chicxulub Asteroid Impact (c

Above: Wilford Brimley voiceover with stories about fly fishing and fossils not included

discovered that a cow had apparently been split in two by a falling stone — the Valera meteorite

these beads vary widely in color and texture

Alcatraz Penitentiary - SOLD 2.77" Showcase Concrete fossilplant It would not be untilThis is an authentic piece of concrete from Alcatraz Penitentiary. Yes, an actual piece of The Rock!" This particular specimen measures 2. 77" along the widest point. This specimen, from the famous Alcatraz island, saw some 1,500 prisoners pass by it during the prison's operation. A certificate of authenticity is included.