Alcatraz Penitentiary - SOLD 2.55" Showcase Concrete big10-2024 We've used this material to

We've used this material to make some of our bismuth crystals and it is a fun challenge

discovered the remains of an Ichthyosaur which was later unearthed in its entirety by Ms

300 miles (6

which housed inside a glass-topped Riker display box measuring 4x3x1 (inches)

The ferry flight took the orbiter to the Kennedy Space Center in Florida for its first launch

Alcatraz Penitentiary - SOLD 2.55" Showcase Concrete big10-2024 We've used this material toThis is an authentic piece of concrete from Alcatraz Penitentiary. Yes, an actual piece of The Rock!" This particular specimen measures 2. 55" 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.