America's longest-serving prisoner in solitary has conviction quashed. Albert Woodfox, right, and Herman Wallace in Angola prison, in Louisiana. Woodfoxâs 1972 murder conviction was overturned when a US appeals court ruled his conviction was secured through racially discriminatory means.
Next, the Olmec created a complex drainage system. These inventions helped the Olmec survive. In addition to their inventions, they also understood many things in life, such as the concept of zero ,linear time, and gravity.
The Olmec were avid mask makers, producing life-sized masks, possibly worn during ceremonies, and smaller masks used as adornments. Olmec Cave Painting. To the west of the traditional Olmec lands, in the mountains of the present-day Mexican State of Guerrero, two caves containing several paintings attributed to the Olmec have been discovered. The Olmec associated caves with the Earth Dragon, one of their gods, and it is likely that the caves were sacred places.