It would have been impossible for McLean to condense all of Ghinsberg's trials into one movie, which unfortunately left out:
- When Ghinsberg woke up covered in leeches.
- When Ghinsberg slipped down a slope and impaled his rectum on a broken stick.
- When Ghinsberg woke up to find a swarm of termites eating patches of his skin where he'd urinated on himself.
The condition that Marcus suffers from (and later Yossi) that causes him pain in his feet is called Trench Foot. It is a serious condition that is caused by feet being wet for too long which can ultimately cause skin and tissue breakdown, increasing the risk of infection and associated mortality. In World War I, 75,000 British soldiers and 2,000 American soldiers died as a result of this condition.
Based on the memoir: "Jungle: A Harrowing True Story of Survival" written by Yossi Ghinsberg.
Jungle scenes were filmed at Bonogin Valley, Gold Coast, Queensland, Australia in April 2016.
Meat ants were substituted for fire ants.