In Australia's Northern Territory lies a vast expanse of unforgiving terrain known as the Top End. Inhabited for over 40,000 years by Indigenous tribes, it is one of the planet's last true frontiers. But it wasn't until decades after European settlement that colonists first began to venture into this harsh, beautiful wilderness. There, they came into contact with the saltwater crocodile.Known as salties and growing up to six metres in length, these apex predators were once almost hunted to extinction. Now a protected species, crocodile numbers have again flourished, but still require an annual hunt to control their population and remove them from areas where they threaten humans and livestock. Over the course of the Top Ends dry season, sanctioned crocodile hunters undertake this dangerous task, but taking down a one-ton bull croc isn't exactly child's play. Using their skills and local knowledge, this rare breed of hunters do battle with these massive reptiles to maintain the fine balance between nature, beast and man. But in the crocs backyard where humans can be outnumbered by three to one, only the toughest hunters will endure.