Boa is a 2001 English-language Action Horror movie. In the highest security prison, located in Antarctica, for the world's deadliest criminals, a mining operation unleashes a giant prehistoric snake with a voracious appetite. It is up to the prison staff, inmates, and two paleontologists to hunt down the beast, escape, or become its prey. Written by Anonymous. Boa features Dean Cain, Elizabeth Lackey, Mark Sheppard, Dean Biasucci, Craig Wasson, Grand L. Bush and Alex Williams.