Alcatraz Penitentiary - 2.604" Showcase Concrete bags it will be replaced by

it will be replaced by a 29-Specimen version

This specimen is an authentic fragment of fossil dinosaur dung

form through a process of accretion in which small bodies collide and coalesce into increasingly larger forms

Billions of years pass before the first stirrings of life

Please Note: Foram sand beaches contain many billions of foraminifera remains along with other debris one is likely to find on many beaches

Alcatraz Penitentiary - 2.604" Showcase Concrete bags it will be replaced byThis is an authentic piece of concrete from Alcatraz Penitentiary. Yes, an actual piece of The Rock!" This particular specimen measures 2. 604" 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.